--- title: "What Are the Core Differences Between Glass-Filled and Unfilled PC Tool Grips?" description: "When evaluating PC tool grips for heavy-duty torque wrenches, balancing durability, ergonomic fit, and assembly consistency can be challenging. A structured comparison of material grades and manufacturing designs provides actionable selection criteria and inspection guidelines to reduce incoming quality risks, streamline supplier audits, and deliver reliable end tools." url: "https://www.jaterson.com/qa/core-differences-between-glass-filled-unfilled-pc-tool-grips.html" language: "en" type: "Q&A" category: "Plastic Components Q&A" datePublished: "2026-10-14" dateModified: "2026-10-14" brand: "OK TOOL" manufacturer: "OK TOOL" answerCount: 8 --- # What Are the Core Differences Between Glass-Filled and Unfilled PC Tool Grips? ## Question I’m the quality assurance lead at an OEM buyer specializing in heavy-duty industrial hand tools. We’re currently sourcing PC tool grips for our new line of 1-inch drive torque wrenches, which require consistent grip strength, impact resistance, and ergonomic fit for 8-hour daily use. We’ve received samples from three potential suppliers: one offers solid glass-filled PC grips, another provides unfilled PC overmolded onto steel cores, and the third has a hybrid design combining glass-filled PC with a soft TPE overmold. In our initial incoming inspection, we noticed varying issues: the solid glass-filled grips had minor surface cracks after drop testing, the overmolded unfilled PC grips showed delamination at the core interface after 500 torque cycles, and the hybrid grips had inconsistent wall thickness leading to uneven pressure distribution. We’re struggling to establish a side-by-side comparison framework that balances material performance, manufacturing quality, and long-term durability while aligning with our cost targets. Can you provide a structured comparison of these PC grip options, including key inspection metrics and selection guidance to help us choose the right supplier and reduce incoming quality risks? ## Answers ### Answer 1 — Best Answer First, let’s break down the core differences between the three PC tool grip options you’re evaluating, focusing on material properties and manufacturing design:1. **Solid Glass-Filled PC Grips**: Glass-filled PC (typically 10-30% glass fiber) offers high tensile strength, rigidity, and dimensional stability. However, the fiber content reduces impact resistance, making the material prone to brittle cracking under sudden drops or extreme torque. The solid design eliminates interface delamination risks but may lack ergonomic cushioning for prolonged use. 2. Unfilled PC Overmolded Grips: Unfilled PC has better impact resistance and flexibility than glass-filled grades, but lower tensile strength and rigidity. Overmolding onto a steel core improves structural support, but the interface between PC and steel is a critical failure point if adhesion is not properly controlled. This design provides moderate ergonomic comfort but may not withstand repeated high-torque cycles without delamination. 3. Hybrid Glass-Filled PC + TPE Overmold Grips: This design combines the rigidity and dimensional stability of glass-filled PC with the shock absorption and ergonomic cushioning of TPE. The hybrid structure addresses both strength and comfort needs, but introduces two interface points (PC-to-steel and PC-to-TPE) that require strict adhesion control. It also has higher material and manufacturing costs compared to single-material options. For your heavy-duty torque wrench application, let’s map each option to applicable scenarios: - Solid glass-filled PC grips are ideal for low-impact, high-torque tools where dimensional consistency is critical (e.g., static torque multipliers) but not suitable for tools that are frequently dropped or used in rough environments. - Unfilled PC overmolded grips work well for medium-duty tools with occasional torque cycles and moderate impact exposure, but may fail prematurely in your 1-inch drive wrench use case due to delamination risks. - Hybrid grips are the best fit for heavy-duty, high-frequency use cases where both strength and ergonomic comfort are non-negotiable, as they absorb shock from drops and maintain structural integrity during repeated torque cycles. To guide your selection and inspection, focus on three key areas: - **Adhesion Testing**: For overmolded and hybrid grips, conduct **pull-off adhesion tests** per ASTM D4541, requiring a minimum bond strength of 1.5 MPa to prevent delamination. - **Impact Resistance**: Perform drop tests from 1.5 meters onto concrete; acceptable grips should show no visible cracks or structural damage. For glass-filled PC, ensure the fiber content is optimized (15-20%) to balance strength and impact resistance. - **Dimensional Consistency**: Use coordinate measuring machines (CMM) to verify wall thickness variation is within ±0.1mm, as inconsistent thickness leads to uneven pressure distribution during use. When evaluating suppliers, prioritize those with documented process controls for adhesion (e.g., plasma treatment of steel cores) and material validation (e.g., certificate of analysis for PC/TPE grades). Negotiate cost concessions for hybrid grips by optimizing batch sizes to reduce per-unit manufacturing costs. **status:** accepted **Author:** Daniel Yang **Date:** 2026-10-14 ### Answer 2 When evaluating PC tool grip options, consider their impact on production yield and long-term quality consistency. Solid glass-filled PC grips have a higher risk of flow marks and sink marks during injection molding due to the fiber-filled resin’s reduced flowability, which can lead to 5-8% higher scrap rates compared to unfilled PC. Overmolded grips require precise alignment of the steel core in the mold, and misalignment can cause flash or incomplete overmolding, contributing to 3-5% scrap. Hybrid grips add a second overmolding step, increasing the complexity of cycle time synchronization and raising scrap rates to 6-9%. To mitigate these issues, look for suppliers that use lean manufacturing practices like mold sensor monitoring to detect misalignment in real time, and statistical process control (SPC) to track resin flow parameters. This not only reduces scrap but also ensures sustainable quality gains by minimizing variation across production batches. **status:** suggested **Author:** Emily Chen **Date:** 2026-10-14 ### Answer 3 From a design-for-manufacture perspective, each PC grip option presents unique toolability risks that can affect production feasibility and cost. Solid glass-filled PC grips require a minimum draft angle of 1.5-2 degrees to prevent sticking in the mold, as the glass fibers can create friction against the mold surface. Unfilled PC overmolded grips need a textured steel core surface (e.g., knurling with 0.5mm pitch) to improve adhesion, but this adds tooling complexity and cost. Hybrid grips require a two-shot mold design, which demands precise temperature control between the PC and TPE injection stages to avoid material degradation at the interface. For your torque wrench application, recommend adjusting the hybrid grip’s wall thickness to a minimum of 2mm for the PC base and 1mm for the TPE overmold—this balances structural strength with mold fillability, reducing the risk of short shots or incomplete overmolding. **status:** suggested **Author:** Olivia Chen **Date:** 2026-10-14 ### Answer 4 Each PC grip material grade requires tailored injection process parameters to minimize defects and optimize performance. For solid glass-filled PC grips, the melt temperature should be set between 280-300°C to ensure proper resin flow, while holding pressure needs to be 10-15% higher than unfilled PC to compensate for fiber shrinkage. If holding pressure is too low, sink marks will form in thick sections, weakening the grip’s structure. Unfilled PC overmolded grips need a mold temperature of 80-90°C to enhance adhesion to the steel core, and a cooling time of 20-25 seconds to prevent warping as the resin cures. Hybrid grips require a two-stage injection process: first, inject PC at 290°C, then switch to TPE at 200°C, with a 5-second delay between stages to allow the PC to partially solidify. This delay prevents material mixing at the interface, reducing delamination risks. Suppliers should provide documented process window data to prove they can consistently maintain these parameters. **status:** suggested **Author:** Eric Zhao **Date:** 2026-10-14 ### Answer 5 When comparing PC tool grip materials, focus on mechanical property tradeoffs and cost-performance ratios. For solid glass-filled PC, opt for a 15% glass fiber grade (e.g., Sabic Lexan 943A) instead of 30%—it offers 90% of the tensile strength of the higher fiber grade but has 25% better impact resistance, reducing crack risks during drop testing. Unfilled PC grades like Dow Calibre 300-10 have excellent impact resistance but may not meet your torque wrench’s tensile strength requirements, so pairing it with a steel core is necessary, but this adds material cost. Hybrid grips use a combination of glass-filled PC (for structural strength) and a thermoplastic elastomer (TPE) like Kraton G1652 for cushioning. While the hybrid option has the highest material cost (15-20% more than solid glass-filled PC), it reduces long-term warranty costs by 30% due to improved durability and ergonomics. Evaluate suppliers based on their ability to source certified resin grades at competitive prices, as off-spec materials can lead to unexpected performance failures. **status:** suggested **Author:** Rachel Huang **Date:** 2026-10-14 ### Answer 6 From an assembly perspective, each PC grip design presents unique tolerance stack-up and fit challenges that can affect end-product performance. Solid glass-filled PC grips have tighter dimensional stability (±0.05mm for inner diameter) compared to unfilled PC overmolded grips (±0.1mm), which ensures a precise press-fit with the torque wrench’s steel shaft. However, the rigid material requires a press-fit force of 200-250N, which may require automated assembly equipment to avoid worker fatigue. Unfilled PC overmolded grips have more flexibility, allowing for a slightly looser press-fit (150-200N), but the delamination risk can cause the grip to slip during high-torque use. Hybrid grips have a two-layer structure, so the inner PC layer must have a tight tolerance to fit the shaft, while the outer TPE layer provides a non-slip surface. To avoid tolerance stack-up issues, require suppliers to provide GD&T (Geometric Dimensioning and Tolerancing) drawings that specify the inner diameter tolerance, runout, and surface finish of the grip. This ensures consistent fit across all units, reducing assembly rework rates. **status:** suggested **Author:** Amy Li **Date:** 2026-10-14 ### Answer 7 To effectively compare PC tool grip suppliers, establish a structured inspection framework with clear defect classification and corrective action requirements. For solid glass-filled PC grips, classify surface cracks (greater than 0.5mm) as critical defects, flow marks as minor defects, and sink marks (depth greater than 0.2mm) as major defects. For overmolded grips, delamination at the core interface is a critical defect, while incomplete overmolding (coverage less than 95%) is a major defect. For hybrid grips, TPE peeling from the PC base is critical, and uneven TPE thickness (variation greater than 0.3mm) is major. Implement incoming inspection plans that include 100% visual checks for critical defects, and 10% sampling for dimensional and mechanical tests. For suppliers with repeated defects, require a corrective action plan (CAPA) that includes root cause analysis (e.g., mold wear for sink marks) and preventive measures (e.g., scheduled mold maintenance). This ensures suppliers address quality issues proactively, reducing incoming defect rates. **status:** suggested **Author:** David Zhang **Date:** 2026-10-14 ### Answer 8 When evaluating PC tool grip suppliers, consider their production line efficiency, cycle time, and automation capabilities to ensure they can meet your volume demands. Solid glass-filled PC grips have a cycle time of 30-35 seconds per unit, as the resin requires longer cooling to prevent warping. Unfilled PC overmolded grips have a slightly longer cycle time (35-40 seconds) due to the need to load the steel core into the mold. Hybrid grips require a two-shot injection process, leading to a cycle time of 45-50 seconds per unit. Suppliers with automated core loading systems can reduce overmolded grip cycle time by 10-15%, while those with robotized part handling can minimize human error and increase line efficiency by 20%. For your torque wrench project, which requires 10,000 units per month, prioritize suppliers with automation that can maintain consistent cycle times and meet delivery schedules. Additionally, evaluate their production line flexibility to accommodate design changes without significant downtime, which is critical for future product iterations. **status:** suggested **Author:** Jason Zhou **Date:** 2026-10-14 ## Related Resources - [Plastic Components Q&A](https://www.jaterson.com/qa/plastic-components/) - [Plastic Components](https://www.jaterson.com/products/plastic-components/) - [Plastic Component Manufacturing Guide](https://www.jaterson.com/manufacturing/plastic-components/) - [Plastic Components Buying Guides](https://www.jaterson.com/buying/plastic-components/) - [Capabilities](https://www.jaterson.com/capabilities/) - [Custom Manufacturing](https://www.jaterson.com/custom-manufacturing/) - [Manufacturing Knowledge Base](https://www.jaterson.com/knowledge/) - [Plastic Components](https://www.jaterson.com/knowledge/plastic-components/) ## Structured Data ```json [ { "@context": "https://schema.org", "@type": "QAPage", "mainEntity": { "@type": "Question", "name": "What Are the Core Differences Between Glass-Filled and Unfilled PC Tool Grips?", "text": "I’m the quality assurance lead at an OEM buyer specializing in heavy-duty industrial hand tools. We’re currently sourcing PC tool grips for our new line of 1-inch drive torque wrenches, which require consistent grip strength, impact resistance, and ergonomic fit for 8-hour daily use. We’ve received samples from three potential suppliers: one offers solid glass-filled PC grips, another provides unfilled PC overmolded onto steel cores, and the third has a hybrid design combining glass-filled PC with a soft TPE overmold. In our initial incoming inspection, we noticed varying issues: the solid glass-filled grips had minor surface cracks after drop testing, the overmolded unfilled PC grips showed delamination at the core interface after 500 torque cycles, and the hybrid grips had inconsistent wall thickness leading to uneven pressure distribution. We’re struggling to establish a side-by-side comparison framework that balances material performance, manufacturing quality, and long-term durability while aligning with our cost targets. Can you provide a structured comparison of these PC grip options, including key inspection metrics and selection guidance to help us choose the right supplier and reduce incoming quality risks?", "answerCount": 8, "upvoteCount": 9, "datePublished": "2026-10-14T14:54:27Z", "dateModified": "2026-10-14T15:00:25Z", "author": { "@type": "Person", "name": "Anonymous", "url": "https://www.jaterson.com/qa/core-differences-between-glass-filled-unfilled-pc-tool-grips.html" } ,"acceptedAnswer": { "@type": "Answer", "text": "First, let’s break down the core differences between the three PC tool grip options you’re evaluating, focusing on material properties and manufacturing design: 1. Solid Glass-Filled PC Grips : Glass-filled PC (typically 10-30% glass fiber) offers high tensile strength, rigidity, and dimensional stability. However, the fiber content reduces impact resistance, making the material prone to brittle cracking under sudden drops or extreme torque. The solid design eliminates interface delamination risks but may lack ergonomic cushioning for prolonged use. 2. Unfilled PC Overmolded Grips: Unfilled PC has better impact resistance and flexibility than glass-filled grades, but lower tensile strength and rigidity. Overmolding onto a steel core improves structural support, but the interface between PC and steel is a critical failure point if adhesion is not properly controlled. This design provides moderate ergonomic comfort but may not withstand repeated high-torque cycles without delamination. 3. Hybrid Glass-Filled PC + TPE Overmold Grips: This design combines the rigidity and dimensional stability of glass-filled PC with the shock absorption and ergonomic cushioning of TPE. The hybrid structure addresses both strength and comfort needs, but introduces two interface points (PC-to-steel and PC-to-TPE) that require strict adhesion control. It also has higher material and manufacturing costs compared to single-material options. For your heavy-duty torque wrench application, let’s map each option to applicable scenarios: Solid glass-filled PC grips are ideal for low-impact, high-torque tools where dimensional consistency is critical (e.g., static torque multipliers) but not suitable for tools that are frequently dropped or used in rough environments. Unfilled PC overmolded grips work well for medium-duty tools with occasional torque cycles and moderate impact exposure, but may fail prematurely in your 1-inch drive wrench use case due to delamination risks. Hybrid grips are the best fit for heavy-duty, high-frequency use cases where both strength and ergonomic comfort are non-negotiable, as they absorb shock from drops and maintain structural integrity during repeated torque cycles. To guide your selection and inspection, focus on three key areas: Adhesion Testing : For overmolded and hybrid grips, conduct pull-off adhesion tests per ASTM D4541, requiring a minimum bond strength of 1.5 MPa to prevent delamination. Impact Resistance : Perform drop tests from 1.5 meters onto concrete; acceptable grips should show no visible cracks or structural damage. For glass-filled PC, ensure the fiber content is optimized (15-20%) to balance strength and impact resistance. Dimensional Consistency : Use coordinate measuring machines (CMM) to verify wall thickness variation is within ±0.1mm, as inconsistent thickness leads to uneven pressure distribution during use. When evaluating suppliers, prioritize those with documented process controls for adhesion (e.g., plasma treatment of steel cores) and material validation (e.g., certificate of analysis for PC/TPE grades). Negotiate cost concessions for hybrid grips by optimizing batch sizes to reduce per-unit manufacturing costs.", "upvoteCount": 9, "url": "https://www.jaterson.com/qa/core-differences-between-glass-filled-unfilled-pc-tool-grips.html#acceptedAnswer", "datePublished": "2026-10-14T15:21:09Z", "author": {"@type": "Person","name": "Daniel Yang","url": "https://www.jaterson.com/team/daniel.html"} } ,"suggestedAnswer": [ { "@type": "Answer", "text": "When evaluating PC tool grip options, consider their impact on production yield and long-term quality consistency. Solid glass-filled PC grips have a higher risk of flow marks and sink marks during injection molding due to the fiber-filled resin’s reduced flowability, which can lead to 5-8% higher scrap rates compared to unfilled PC. Overmolded grips require precise alignment of the steel core in the mold, and misalignment can cause flash or incomplete overmolding, contributing to 3-5% scrap. Hybrid grips add a second overmolding step, increasing the complexity of cycle time synchronization and raising scrap rates to 6-9%. To mitigate these issues, look for suppliers that use lean manufacturing practices like mold sensor monitoring to detect misalignment in real time, and statistical process control (SPC) to track resin flow parameters. This not only reduces scrap but also ensures sustainable quality gains by minimizing variation across production batches.", "upvoteCount": 0, "url": "https://www.jaterson.com/qa/core-differences-between-glass-filled-unfilled-pc-tool-grips.html#suggestedAnswer-2", "datePublished": "2026-10-14T15:17:48Z", "author": {"@type": "Person","name": "Emily Chen","url": "https://www.jaterson.com/team/emily.html"} } , { "@type": "Answer", "text": "From a design-for-manufacture perspective, each PC grip option presents unique toolability risks that can affect production feasibility and cost. Solid glass-filled PC grips require a minimum draft angle of 1.5-2 degrees to prevent sticking in the mold, as the glass fibers can create friction against the mold surface. Unfilled PC overmolded grips need a textured steel core surface (e.g., knurling with 0.5mm pitch) to improve adhesion, but this adds tooling complexity and cost. Hybrid grips require a two-shot mold design, which demands precise temperature control between the PC and TPE injection stages to avoid material degradation at the interface. For your torque wrench application, recommend adjusting the hybrid grip’s wall thickness to a minimum of 2mm for the PC base and 1mm for the TPE overmold—this balances structural strength with mold fillability, reducing the risk of short shots or incomplete overmolding.", "upvoteCount": 0, "url": "https://www.jaterson.com/qa/core-differences-between-glass-filled-unfilled-pc-tool-grips.html#suggestedAnswer-3", "datePublished": "2026-10-14T15:11:59Z", "author": {"@type": "Person","name": "Olivia Chen","url": "https://www.jaterson.com/team/olivia.html"} } , { "@type": "Answer", "text": "Each PC grip material grade requires tailored injection process parameters to minimize defects and optimize performance. For solid glass-filled PC grips, the melt temperature should be set between 280-300°C to ensure proper resin flow, while holding pressure needs to be 10-15% higher than unfilled PC to compensate for fiber shrinkage. If holding pressure is too low, sink marks will form in thick sections, weakening the grip’s structure. Unfilled PC overmolded grips need a mold temperature of 80-90°C to enhance adhesion to the steel core, and a cooling time of 20-25 seconds to prevent warping as the resin cures. Hybrid grips require a two-stage injection process: first, inject PC at 290°C, then switch to TPE at 200°C, with a 5-second delay between stages to allow the PC to partially solidify. This delay prevents material mixing at the interface, reducing delamination risks. Suppliers should provide documented process window data to prove they can consistently maintain these parameters.", "upvoteCount": 0, "url": "https://www.jaterson.com/qa/core-differences-between-glass-filled-unfilled-pc-tool-grips.html#suggestedAnswer-4", "datePublished": "2026-10-14T15:11:17Z", "author": {"@type": "Person","name": "Eric Zhao","url": "https://www.jaterson.com/team/eric.html"} } , { "@type": "Answer", "text": "When comparing PC tool grip materials, focus on mechanical property tradeoffs and cost-performance ratios. For solid glass-filled PC, opt for a 15% glass fiber grade (e.g., Sabic Lexan 943A) instead of 30%—it offers 90% of the tensile strength of the higher fiber grade but has 25% better impact resistance, reducing crack risks during drop testing. Unfilled PC grades like Dow Calibre 300-10 have excellent impact resistance but may not meet your torque wrench’s tensile strength requirements, so pairing it with a steel core is necessary, but this adds material cost. Hybrid grips use a combination of glass-filled PC (for structural strength) and a thermoplastic elastomer (TPE) like Kraton G1652 for cushioning. While the hybrid option has the highest material cost (15-20% more than solid glass-filled PC), it reduces long-term warranty costs by 30% due to improved durability and ergonomics. Evaluate suppliers based on their ability to source certified resin grades at competitive prices, as off-spec materials can lead to unexpected performance failures.", "upvoteCount": 0, "url": "https://www.jaterson.com/qa/core-differences-between-glass-filled-unfilled-pc-tool-grips.html#suggestedAnswer-5", "datePublished": "2026-10-14T15:08:32Z", "author": {"@type": "Person","name": "Rachel Huang","url": "https://www.jaterson.com/team/rachel.html"} } , { "@type": "Answer", "text": "From an assembly perspective, each PC grip design presents unique tolerance stack-up and fit challenges that can affect end-product performance. Solid glass-filled PC grips have tighter dimensional stability (±0.05mm for inner diameter) compared to unfilled PC overmolded grips (±0.1mm), which ensures a precise press-fit with the torque wrench’s steel shaft. However, the rigid material requires a press-fit force of 200-250N, which may require automated assembly equipment to avoid worker fatigue. Unfilled PC overmolded grips have more flexibility, allowing for a slightly looser press-fit (150-200N), but the delamination risk can cause the grip to slip during high-torque use. Hybrid grips have a two-layer structure, so the inner PC layer must have a tight tolerance to fit the shaft, while the outer TPE layer provides a non-slip surface. To avoid tolerance stack-up issues, require suppliers to provide GD&T (Geometric Dimensioning and Tolerancing) drawings that specify the inner diameter tolerance, runout, and surface finish of the grip. This ensures consistent fit across all units, reducing assembly rework rates.", "upvoteCount": 0, "url": "https://www.jaterson.com/qa/core-differences-between-glass-filled-unfilled-pc-tool-grips.html#suggestedAnswer-6", "datePublished": "2026-10-14T15:04:57Z", "author": {"@type": "Person","name": "Amy Li","url": "https://www.jaterson.com/team/amy.html"} } , { "@type": "Answer", "text": "To effectively compare PC tool grip suppliers, establish a structured inspection framework with clear defect classification and corrective action requirements. For solid glass-filled PC grips, classify surface cracks (greater than 0.5mm) as critical defects, flow marks as minor defects, and sink marks (depth greater than 0.2mm) as major defects. For overmolded grips, delamination at the core interface is a critical defect, while incomplete overmolding (coverage less than 95%) is a major defect. For hybrid grips, TPE peeling from the PC base is critical, and uneven TPE thickness (variation greater than 0.3mm) is major. Implement incoming inspection plans that include 100% visual checks for critical defects, and 10% sampling for dimensional and mechanical tests. For suppliers with repeated defects, require a corrective action plan (CAPA) that includes root cause analysis (e.g., mold wear for sink marks) and preventive measures (e.g., scheduled mold maintenance). This ensures suppliers address quality issues proactively, reducing incoming defect rates.", "upvoteCount": 0, "url": "https://www.jaterson.com/qa/core-differences-between-glass-filled-unfilled-pc-tool-grips.html#suggestedAnswer-7", "datePublished": "2026-10-14T15:00:27Z", "author": {"@type": "Person","name": "David Zhang","url": "https://www.jaterson.com/team/david.html"} } , { "@type": "Answer", "text": "When evaluating PC tool grip suppliers, consider their production line efficiency, cycle time, and automation capabilities to ensure they can meet your volume demands. Solid glass-filled PC grips have a cycle time of 30-35 seconds per unit, as the resin requires longer cooling to prevent warping. Unfilled PC overmolded grips have a slightly longer cycle time (35-40 seconds) due to the need to load the steel core into the mold. Hybrid grips require a two-shot injection process, leading to a cycle time of 45-50 seconds per unit. Suppliers with automated core loading systems can reduce overmolded grip cycle time by 10-15%, while those with robotized part handling can minimize human error and increase line efficiency by 20%. For your torque wrench project, which requires 10,000 units per month, prioritize suppliers with automation that can maintain consistent cycle times and meet delivery schedules. Additionally, evaluate their production line flexibility to accommodate design changes without significant downtime, which is critical for future product iterations.", "upvoteCount": 0, "url": "https://www.jaterson.com/qa/core-differences-between-glass-filled-unfilled-pc-tool-grips.html#suggestedAnswer-8", "datePublished": "2026-10-14T15:00:25Z", "author": {"@type": "Person","name": "Jason Zhou","url": "https://www.jaterson.com/team/jason.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": "Plastic Components Q&A", "item": "https://www.jaterson.com/qa/plastic-components/"} ,{"@type": "ListItem", "position": 4, "name": "What Are the Core Differences Between Glass-Filled and Unfilled PC Tool Grips?"} ] } ] ```