DoubleEnded Drill Chuck Ratchet Wrench Key Dimensions: Small Head Diameter: Approx. 12.7 mm (0.5 in) Large Head Diameter: Approx. 17.5 mm (0.7 in) Features and Benefits: TwoinOne Design: This ratchet spanner features dualended versatility, allowing you to work with different chuck sizes using one tool. Eliminates the need to switch between multiple wrenches, saving time and effort. Ergonomic NonSlip Handle: Designed for comfort during extended use, the handle provides a secure grip and reduces hand fatigue, even over long working periods. Durable Ratchet Mechanism: Enables smooth forward and reverse operation, making tightening and loosening quick and efficient. Wide Compatibility: Suitable for securing, tightening, and loosening a variety of drill chuck sizes, making it a practical choice for professionals and DIY users alike. Use Scenarios: Ideal for adjusting the chuck on bench drills or handheld drills in a workshop setting. Useful for quick bit changes on job sites, ensuring tools remain secure and operational. for maintenance tasks where precise tightening or loosening of various chuck sizes is required. Performance: With its sturdy ratchet mechanism, ergonomic construction, and dual head compatibility, this drill chuck wrench provides reliable performance for a wide range of drilling applications. It is built to handle frequent use while maintaining efficiency and comfort.