Features Secure Fit for Precision Use: Designed specifically for 1/4 inch hex shank bits, ensuring a tight grip and enhanced concentricity for accurate drilling and fastening Durable Phosphatized Coating: The robust phosphatized finish prevents rust and corrosion, extending the lifespan of your tools and maintaining performance over time Quick Change Shank System: Easily switch between bits with the quick change shank feature, maximizing efficiency and reducing downtime during your projects Versatile Compatibility: Ideal for use with pneumatic screwdrivers, electric drills, electric screwdrivers, and traditional screwdrivers, making it a must-have for every toolbox Complete Set for All Needs: This 10-piece set provides a comprehensive solution for various tasks, ensuring you have the right tool for any job at hand Features: 1、Designed for 1/4 inch hex shank bits. Good concentricity 2、Holds bits securely 3、The is phosphatized to prevent 4、 connection rod 5、Suitable for pneumatic screw drivers, electric drills, electric screwdrivers, screwdrivers Specification: Description: The extension holder is designed for 1/4" hex shank bits, can be used for pneumatic screw drivers, electric drills, electric screwdrivers. It is anti-. Features: Designed for 1/4" hex shank bits. Good concentricity. Holds bits securely. The is phosphatized to prevent . connection rod. Suitable for pneumatic screw drivers, electric drills, electric screwdrivers, screwdrivers. Specification: Materiel: Carbon steel Length: About 60 mm / 2.36" Hexagonal Size: 1/4" Color: Grey Quantity: 10 pcs per bag Weight: 202g(approx.) Package includes: 10 x Screwdriver Bit Holder Note: Please allow 1-m error due to manual measurement. Thanks for your understanding. Package List