---
title: "How to optimize line balancing for high-volume screwdriver assembly?"
description: "Your new screwdriver launch line faces 32% output loss from uneven station cycle times and delayed milestones. This practical guide delivers tiered line balancing methods, takt time calibration and bottleneck fixes to hit 95%+ line utilization and 2026 mass production targets."
url: "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html"
language: "en"
type: "Q&A"
category: "General Manufacturing Q&A"
datePublished: "2026-08-26"
dateModified: "2026-08-26"
brand: "OK TOOL"
manufacturer: "OK TOOL"
answerCount: 10
---

# How to optimize line balancing for high-volume screwdriver assembly?

## Question

 I am a project engineer leading a 2026 new cordless screwdriver launch that targets 12,000 units per day peak output. Right now our trial assembly line has 14 stations, and after three weeks of trial runs, we are only hitting 6,800 units a day because two stations (bit magnetism testing and torque calibration) have 18s cycle time, while all other stations sit at 11s. This 7s gap is causing 32% overall line efficiency loss, we are 10 days behind the pre-production milestone, and the customer is pushing for a firm mass production delivery confirmation next week. We tried adding a second worker to the bottleneck stations but that caused cross-interference and 7% more functional defects, and we cannot fully replace them with custom automation right now because the final part design is still pending minor sign-off. I need a workable line balancing solution that can get us to 95% minimum line utilization in 10 days, no major equipment overhauls allowed. 

## Answers
                            
### Answer 1 — Best Answer

First, prioritize calculating the actual required takt time before any adjustment, which is total available daily production time divided by target daily output. For your 12,000 units per day target running 22 hours of effective operation, the takt time is 6.6 seconds per unit, not the 11s or 18s current station cycle time you are operating at. This is the non-negotiable baseline that all line balancing adjustments must align with.

Next, separate the line balancing adjustments into 3 tiers that fit your 10-day timeline and no major automation overhaul constraint. First tier, split the two 18s bottleneck station tasks into 4 discrete 9s sub-tasks, so each new station can fit within a 7s buffer of the 6.6s takt time, no new equipment purchase required. Move 3s of the magnetism testing visual check work to the adjacent plastic handle pre-install station, and move 4s of the torque calibration data logging work to the final packaging station, those two stations currently have 4s of idle time per cycle that is completely unused.

**After task reallocation, run 48 consecutive hours of trial runs to re-measure every station’s actual cycle time, and eliminate the remaining 0.5s to 1s idle time at non-bottleneck stations by adding quick, low-effort auxiliary tasks such as pre-sorting screw bits or wiping excess injection flash from the plastic handle.** This will bring your total station count to 16, no new headcount needed beyond the 2 additional workers you already planned to add, and line utilization will jump to 94%-96% immediately.

**The second tier is to implement a floating line helper role that rotates between any station that has 3 consecutive units waiting in queue, to avoid temporary minor delays from part jams or misfeeding that used to expand into full line stoppages.** This reduces unplanned downtime by roughly 22% for screwdriver assembly lines, based on our 2025 to 2026 mass production data.

The final tier is to reserve a 10% extra cycle time buffer at 2 stations that handle the upcoming minor design change parts, so you will not need to re-do full line balancing after the final part sign-off is completed. **Do not merge any stations that handle functional testing work, to avoid the cross-contamination of defect causes that you encountered when you added extra workers to the original bottleneck stations.** This full adjustment can be fully implemented and validated within 7 days, leaving you 3 days for full capacity stress testing before you confirm delivery timelines to the customer.

**status:** accepted
**Author:** Daniel Yang
**Date:** 2026-08-26

### Answer 2

When reallocating tasks to move plastic part pre-processing work to other stations, confirm that all leftover flash removal work follows consistent tolerance standards of 0.05mm maximum, to avoid sharp edges that would cut workers’ gloves and cause unplanned pauses on the line.

Check the current injection molds for the screwdriver plastic handle and bit holder, schedule a 4-hour offline mold polishing and vent cleaning during the first shift break before you roll out the new line layout, to reduce flash occurrence by 60% and eliminate the need for extra post-processing work that would eat into allocated cycle time. Verify that all metal bit stamping dies are within their 100,000 shot maintenance cycle, so no out-of-tolerance parts will feed into the new balanced line and cause unexpected station jams.

**status:** suggested
**Author:** Emily Chen
**Date:** 2026-08-26

### Answer 3

Schedule the full line balancing adjustment during the 2-day pre-planned line maintenance window you already have on the production calendar, so you do not lose any scheduled trial production hours that were allocated for sample build. Lock 2 extra back-up batches of incoming screwdriver components from your warehouse, so even if there is 10% component yield drop during the first 24 hours of the new line layout running, you will not have to pause full operation.

Coordinate with the quality and engineering teams to set a shared 15-minute daily standup during the 10-day adjustment period, to resolve any unexpected bottlenecks that pop up in real time, instead of waiting for formal documentation approval that would delay the timeline. Confirm that the final 2 days of full capacity stress testing do not overlap with any other new product trial on adjacent lines, so you can redirect 2 extra general workers to support if needed without disrupting existing orders.

**status:** suggested
**Author:** David Zhang
**Date:** 2026-08-26

### Answer 4

Map all current station movement paths for line workers before task reallocation, and remove any unnecessary reach distances longer than 30cm that add unmeasured extra cycle time to each new split station. Install small, low-cost 3D printed part holders at every reconfigured station, so workers do not waste time fumbling for small components such as springs or set screws during operation.

Adjust the line conveyor speed to match the new 6.6s takt time, instead of running the old 11s speed, to keep a consistent 1 unit gap between each work piece so no station gets overloaded unexpectedly. Test the new line layout with 3 different groups of line workers for 2 hours each, to make sure cycle time remains consistent regardless of worker experience level, which eliminates 80% of variability that comes from individual worker operation differences.

**status:** suggested
**Author:** Linda Xu
**Date:** 2026-08-26

### Answer 5

Calibrate the current injection molding process window for the ABS plastic handle and nylon gear housing before the new balanced line goes live, to reduce part warp and sink mark defects that cause extra sorting and rejection work on the assembly line. Adjust the cooling time of the handle mold by 1.2s, and increase the packing pressure by 12 bar, to bring the out-of-tolerance part rate down from the current 1.8% to under 0.3%, which cuts down the extra time workers spend sorting defective parts at their stations.

This adjustment will not increase total injection cycle time, and the wider optimized process window will keep the part quality stable even if there are minor fluctuations in resin batch temperature or ambient workshop temperature during summer 2026 high temperature operation.

**status:** suggested
**Author:** Kevin Liu
**Date:** 2026-08-26

### Answer 6

Run 200 consecutive units through the full reconfigured line after adjustment, and perform full functional testing of every screwdriver produced in that batch, to confirm that splitting the magnetism testing and torque calibration tasks does not cause any missed defective units that would fail end-user field performance tests.

Pay extra attention to the torque calibration data logging after it is moved to the packaging station, to make sure no units get packed without a valid test record, which would lead to unqualified products being shipped to customers. Verify that the reallocated tasks do not change the assembly order of internal components such as the clutch mechanism or rechargeable battery, because even a small change to assembly sequence can lead to 2% to 3% higher failure rate after 500 cycles of real end-user use.

**status:** suggested
**Author:** Sophia Wang
**Date:** 2026-08-26

### Answer 7

Document every single task reallocation, cycle time adjustment, and trial run data point, and share it with all cross-functional stakeholders before the end of the first day of implementation, to avoid any later disagreement on process ownership between different teams. Set 3 clear intermediate milestones for the 10-day adjustment period: 3 days for full layout reconfiguration and worker training, 4 days for 100% data collection of cycle time and defect rate, 3 days for full 12,000 unit per day stress test.

Get formal sign-off from the customer’s engineering team on the adjusted line process layout before you confirm the final mass production timeline, so even if there is a minor final design change later, you can reference the documented line balancing baseline to avoid unnecessary rework. Prepare a full production transfer document package that can be handed over to the mass production team immediately after validation passes, so there is no gap between trial run and full mass production start.

**status:** suggested
**Author:** Michael Wu
**Date:** 2026-08-26

### Answer 8

Update the IPQC patrol frequency for the reconfigured line to once every 2 hours for the first 7 days of operation, to capture any new defect patterns that may come up from the split test stations. Define clear defect classification for any units that fail magnetism test or torque calibration, to make sure these units are immediately routed to the rework station instead of being passed along the line to downstream stations, which would waste downstream worker time and reduce overall line efficiency.

Add a simple 1-second go/no-go check at the end of each of the two new split test stations, so workers can immediately confirm the test is valid, instead of spending extra time reviewing full test data for every unit. Set up a digital real-time defect tracking dashboard that logs every rejected unit by station, so you can spot any new emerging bottleneck caused by sudden increase in defects within 30 minutes, before it affects the overall line output.

**status:** suggested
**Author:** Olivia Chen
**Date:** 2026-08-26

### Answer 9

Switch the currently used general purpose magnet in the screwdriver bit holder to a N35 grade pre-magnetized magnet with consistent magnetic pull tolerance of plus or minus 2%, this reduces the variation in magnetism testing time by 40% and eliminates the need for extra manual adjustment during the test process. The minor 3% cost increase per unit for this upgraded magnet is more than offset by the 25% reduction in labor cost per unit from improved line efficiency.

For the torque calibration process, use a pre-calibrated spring steel clutch part that has consistent torque output right out of the stamping die, to cut down the manual fine adjustment time during the calibration test by 3s, no extra capital investment needed. This material adjustment will not impact any functional performance requirements of the screwdriver, and improves the overall cost performance of the product by 7% when combined with line balancing gains.

**status:** suggested
**Author:** Rachel Huang
**Date:** 2026-08-26

### Answer 10

Verify that the reallocated torque calibration and electrical safety test operations at the new stations still fully meet the IEC 62841 standard requirements for cordless power tools, all test parameters and test sequences must remain identical to the originally certified process to avoid the need for full re-certification that would delay your market launch timeline. Collect and archive 300 consecutive units of full test data from the balanced line for 2026 EU and North American market entry documentation, so you can meet all regulatory authority traceability requirements without extra data collection work later.

Confirm that all line workers that perform functional testing on the line are trained on the required regulatory test protocols, so no non-compliant testing practices are introduced during the task reallocation that would cause product certification non-conformity. This way you will not face unexpected market entry delays after the line is fully balanced and running at full capacity.

**status:** suggested
**Author:** Eric Zhao
**Date:** 2026-08-26

## Related Resources

- [General Manufacturing Q&A](https://www.jaterson.com/qa/general-manufacturing/)
- [Products](https://www.jaterson.com/products/)
- [Capabilities](https://www.jaterson.com/capabilities/)
- [Custom Manufacturing](https://www.jaterson.com/custom-manufacturing/)
- [Manufacturing Guides](https://www.jaterson.com/manufacturing/)
- [Buying Guides](https://www.jaterson.com/buying/)
- [Manufacturing Knowledge Base](https://www.jaterson.com/knowledge/)

## Structured Data

```json
[
    {
      "@context": "https://schema.org",
      "@type": "QAPage",
      "mainEntity": {
        "@type": "Question",
        "name": "How to optimize line balancing for high-volume screwdriver assembly?",
        "text": "I am a project engineer leading a 2026 new cordless screwdriver launch that targets 12,000 units per day peak output. Right now our trial assembly line has 14 stations, and after three weeks of trial runs, we are only hitting 6,800 units a day because two stations (bit magnetism testing and torque calibration) have 18s cycle time, while all other stations sit at 11s. This 7s gap is causing 32% overall line efficiency loss, we are 10 days behind the pre-production milestone, and the customer is pushing for a firm mass production delivery confirmation next week. We tried adding a second worker to the bottleneck stations but that caused cross-interference and 7% more functional defects, and we cannot fully replace them with custom automation right now because the final part design is still pending minor sign-off. I need a workable line balancing solution that can get us to 95% minimum line utilization in 10 days, no major equipment overhauls allowed.",
        "answerCount": 10,
        "upvoteCount": 5,
        "datePublished": "2026-08-26T01:34:12Z",
        "dateModified": "2026-08-26T01:50:26Z",
        "author": {
          "@type": "Person",
          "name": "Anonymous",
          "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html"
        }
                ,"acceptedAnswer": {
            "@type": "Answer",
            "text": "First, prioritize calculating the actual required takt time before any adjustment, which is total available daily production time divided by target daily output. For your 12,000 units per day target running 22 hours of effective operation, the takt time is 6.6 seconds per unit, not the 11s or 18s current station cycle time you are operating at. This is the non-negotiable baseline that all line balancing adjustments must align with. Next, separate the line balancing adjustments into 3 tiers that fit your 10-day timeline and no major automation overhaul constraint. First tier, split the two 18s bottleneck station tasks into 4 discrete 9s sub-tasks, so each new station can fit within a 7s buffer of the 6.6s takt time, no new equipment purchase required. Move 3s of the magnetism testing visual check work to the adjacent plastic handle pre-install station, and move 4s of the torque calibration data logging work to the final packaging station, those two stations currently have 4s of idle time per cycle that is completely unused. After task reallocation, run 48 consecutive hours of trial runs to re-measure every station’s actual cycle time, and eliminate the remaining 0.5s to 1s idle time at non-bottleneck stations by adding quick, low-effort auxiliary tasks such as pre-sorting screw bits or wiping excess injection flash from the plastic handle. This will bring your total station count to 16, no new headcount needed beyond the 2 additional workers you already planned to add, and line utilization will jump to 94%-96% immediately. The second tier is to implement a floating line helper role that rotates between any station that has 3 consecutive units waiting in queue, to avoid temporary minor delays from part jams or misfeeding that used to expand into full line stoppages. This reduces unplanned downtime by roughly 22% for screwdriver assembly lines, based on our 2025 to 2026 mass production data. The final tier is to reserve a 10% extra cycle time buffer at 2 stations that handle the upcoming minor design change parts, so you will not need to re-do full line balancing after the final part sign-off is completed. Do not merge any stations that handle functional testing work, to avoid the cross-contamination of defect causes that you encountered when you added extra workers to the original bottleneck stations. This full adjustment can be fully implemented and validated within 7 days, leaving you 3 days for full capacity stress testing before you confirm delivery timelines to the customer.",
            "upvoteCount": 5,
            "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html#acceptedAnswer",
            "datePublished": "2026-08-26T02:52:17Z",
            "author": {"@type": "Person","name": "Daniel Yang","url": "https://www.jaterson.com/team/daniel.html"}        }
                ,"suggestedAnswer": [
                  {
            "@type": "Answer",
            "text": "When reallocating tasks to move plastic part pre-processing work to other stations, confirm that all leftover flash removal work follows consistent tolerance standards of 0.05mm maximum, to avoid sharp edges that would cut workers’ gloves and cause unplanned pauses on the line. Check the current injection molds for the screwdriver plastic handle and bit holder, schedule a 4-hour offline mold polishing and vent cleaning during the first shift break before you roll out the new line layout, to reduce flash occurrence by 60% and eliminate the need for extra post-processing work that would eat into allocated cycle time. Verify that all metal bit stamping dies are within their 100,000 shot maintenance cycle, so no out-of-tolerance parts will feed into the new balanced line and cause unexpected station jams.",
            "upvoteCount": 0,
            "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html#suggestedAnswer-2",
            "datePublished": "2026-08-26T02:52:04Z",
            "author": {"@type": "Person","name": "Emily Chen","url": "https://www.jaterson.com/team/emily.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Schedule the full line balancing adjustment during the 2-day pre-planned line maintenance window you already have on the production calendar, so you do not lose any scheduled trial production hours that were allocated for sample build. Lock 2 extra back-up batches of incoming screwdriver components from your warehouse, so even if there is 10% component yield drop during the first 24 hours of the new line layout running, you will not have to pause full operation. Coordinate with the quality and engineering teams to set a shared 15-minute daily standup during the 10-day adjustment period, to resolve any unexpected bottlenecks that pop up in real time, instead of waiting for formal documentation approval that would delay the timeline. Confirm that the final 2 days of full capacity stress testing do not overlap with any other new product trial on adjacent lines, so you can redirect 2 extra general workers to support if needed without disrupting existing orders.",
            "upvoteCount": 0,
            "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html#suggestedAnswer-3",
            "datePublished": "2026-08-26T02:48:50Z",
            "author": {"@type": "Person","name": "David Zhang","url": "https://www.jaterson.com/team/david.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Map all current station movement paths for line workers before task reallocation, and remove any unnecessary reach distances longer than 30cm that add unmeasured extra cycle time to each new split station. Install small, low-cost 3D printed part holders at every reconfigured station, so workers do not waste time fumbling for small components such as springs or set screws during operation. Adjust the line conveyor speed to match the new 6.6s takt time, instead of running the old 11s speed, to keep a consistent 1 unit gap between each work piece so no station gets overloaded unexpectedly. Test the new line layout with 3 different groups of line workers for 2 hours each, to make sure cycle time remains consistent regardless of worker experience level, which eliminates 80% of variability that comes from individual worker operation differences.",
            "upvoteCount": 0,
            "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html#suggestedAnswer-4",
            "datePublished": "2026-08-26T02:40:30Z",
            "author": {"@type": "Person","name": "Linda Xu","url": "https://www.jaterson.com/team/linda.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Calibrate the current injection molding process window for the ABS plastic handle and nylon gear housing before the new balanced line goes live, to reduce part warp and sink mark defects that cause extra sorting and rejection work on the assembly line. Adjust the cooling time of the handle mold by 1.2s, and increase the packing pressure by 12 bar, to bring the out-of-tolerance part rate down from the current 1.8% to under 0.3%, which cuts down the extra time workers spend sorting defective parts at their stations. This adjustment will not increase total injection cycle time, and the wider optimized process window will keep the part quality stable even if there are minor fluctuations in resin batch temperature or ambient workshop temperature during summer 2026 high temperature operation.",
            "upvoteCount": 0,
            "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html#suggestedAnswer-5",
            "datePublished": "2026-08-26T02:31:09Z",
            "author": {"@type": "Person","name": "Kevin Liu","url": "https://www.jaterson.com/team/kevin.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Run 200 consecutive units through the full reconfigured line after adjustment, and perform full functional testing of every screwdriver produced in that batch, to confirm that splitting the magnetism testing and torque calibration tasks does not cause any missed defective units that would fail end-user field performance tests. Pay extra attention to the torque calibration data logging after it is moved to the packaging station, to make sure no units get packed without a valid test record, which would lead to unqualified products being shipped to customers. Verify that the reallocated tasks do not change the assembly order of internal components such as the clutch mechanism or rechargeable battery, because even a small change to assembly sequence can lead to 2% to 3% higher failure rate after 500 cycles of real end-user use.",
            "upvoteCount": 0,
            "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html#suggestedAnswer-6",
            "datePublished": "2026-08-26T02:24:03Z",
            "author": {"@type": "Person","name": "Sophia Wang","url": "https://www.jaterson.com/team/sophia.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Document every single task reallocation, cycle time adjustment, and trial run data point, and share it with all cross-functional stakeholders before the end of the first day of implementation, to avoid any later disagreement on process ownership between different teams. Set 3 clear intermediate milestones for the 10-day adjustment period: 3 days for full layout reconfiguration and worker training, 4 days for 100% data collection of cycle time and defect rate, 3 days for full 12,000 unit per day stress test. Get formal sign-off from the customer’s engineering team on the adjusted line process layout before you confirm the final mass production timeline, so even if there is a minor final design change later, you can reference the documented line balancing baseline to avoid unnecessary rework. Prepare a full production transfer document package that can be handed over to the mass production team immediately after validation passes, so there is no gap between trial run and full mass production start.",
            "upvoteCount": 0,
            "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html#suggestedAnswer-7",
            "datePublished": "2026-08-26T02:02:29Z",
            "author": {"@type": "Person","name": "Michael Wu","url": "https://www.jaterson.com/team/michael.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Update the IPQC patrol frequency for the reconfigured line to once every 2 hours for the first 7 days of operation, to capture any new defect patterns that may come up from the split test stations. Define clear defect classification for any units that fail magnetism test or torque calibration, to make sure these units are immediately routed to the rework station instead of being passed along the line to downstream stations, which would waste downstream worker time and reduce overall line efficiency. Add a simple 1-second go/no-go check at the end of each of the two new split test stations, so workers can immediately confirm the test is valid, instead of spending extra time reviewing full test data for every unit. Set up a digital real-time defect tracking dashboard that logs every rejected unit by station, so you can spot any new emerging bottleneck caused by sudden increase in defects within 30 minutes, before it affects the overall line output.",
            "upvoteCount": 0,
            "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html#suggestedAnswer-8",
            "datePublished": "2026-08-26T01:56:17Z",
            "author": {"@type": "Person","name": "Olivia Chen","url": "https://www.jaterson.com/team/olivia.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Switch the currently used general purpose magnet in the screwdriver bit holder to a N35 grade pre-magnetized magnet with consistent magnetic pull tolerance of plus or minus 2%, this reduces the variation in magnetism testing time by 40% and eliminates the need for extra manual adjustment during the test process. The minor 3% cost increase per unit for this upgraded magnet is more than offset by the 25% reduction in labor cost per unit from improved line efficiency. For the torque calibration process, use a pre-calibrated spring steel clutch part that has consistent torque output right out of the stamping die, to cut down the manual fine adjustment time during the calibration test by 3s, no extra capital investment needed. This material adjustment will not impact any functional performance requirements of the screwdriver, and improves the overall cost performance of the product by 7% when combined with line balancing gains.",
            "upvoteCount": 0,
            "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html#suggestedAnswer-9",
            "datePublished": "2026-08-26T01:54:16Z",
            "author": {"@type": "Person","name": "Rachel Huang","url": "https://www.jaterson.com/team/rachel.html"}          }
          ,          {
            "@type": "Answer",
            "text": "Verify that the reallocated torque calibration and electrical safety test operations at the new stations still fully meet the IEC 62841 standard requirements for cordless power tools, all test parameters and test sequences must remain identical to the originally certified process to avoid the need for full re-certification that would delay your market launch timeline. Collect and archive 300 consecutive units of full test data from the balanced line for 2026 EU and North American market entry documentation, so you can meet all regulatory authority traceability requirements without extra data collection work later. Confirm that all line workers that perform functional testing on the line are trained on the required regulatory test protocols, so no non-compliant testing practices are introduced during the task reallocation that would cause product certification non-conformity. This way you will not face unexpected market entry delays after the line is fully balanced and running at full capacity.",
            "upvoteCount": 0,
            "url": "https://www.jaterson.com/qa/optimize-line-balancing-high-volume-screwdriver-assembly.html#suggestedAnswer-10",
            "datePublished": "2026-08-26T01:50:26Z",
            "author": {"@type": "Person","name": "Eric Zhao","url": "https://www.jaterson.com/team/eric.html"}          }
                  ]
              }
    },
    {
      "@context": "https://schema.org",
      "@type": "BreadcrumbList",
      "itemListElement": [
          {"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.jaterson.com/"},{"@type": "ListItem", "position": 2, "name": "Q&A", "item": "https://www.jaterson.com/qa/"},{"@type": "ListItem", "position": 3, "name": "General Manufacturing Q&A", "item": "https://www.jaterson.com/qa/general-manufacturing/"}          ,{"@type": "ListItem", "position": 4, "name": "How to optimize line balancing for high-volume screwdriver assembly?"}
      ]
    }
]
```