Key Specifications Shank Size: 1/4 inch hex shank Clamping Range: 0.3 to 3.6 mm (0.012 to 0.14 inch) Overall Length: 49 mm (1.9 inch) Style: 3jaw adapter Compatibility: Fits round shank drill bits Durable Construction Designed with an aluminum alloy housing and hardened 45 steel shank for the ideal balance of strength and light weight. The corrosionresistant aluminum body helps ensure long service life, while precisionmachined steel components resist wear and deformation under torque applications. Keyless Convenience The keyless chuck design allows you to secure or release round shank drill bits without needing a chuck key or additional tools. Simply plug into your cordless screwdriver to instantly convert it into a power drill, enabling fast changes between driving and drilling tasks to keep up with demanding job requirements. Fast Conversion This adapter quickly transforms compatible cordless screwdrivers into versatile drilling or rotary tools. A plugandplay installation means no complex setup—just insert and start working. Versatile Applications Compatible with round shank drill bits, hex bits, and a variety of accessories, making it suitable for: DIY home improvement projects such as assembling furniture or installing fixtures Woodworking tasks including pilot hole drilling and light sanding Automotive maintenance such as bracket installation and accessory mounting Designed for convenience, durability, and performance, this 3jaw keyless drill chuck adapter is an efficient tool for anyone needing quick drill bit changes and multitask capability with their cordless screwdriver.