Welcome to Fdelink，I wish you a happy shopping！ 1/4"Keyless Drill Bit Chuck Hex Shank Adapter Converter Quick Change 0.3-6.5mm Specification: Brand new Total Length (approx.): 71mm Clamping Range: 0.3-6.5mm Color: Sliver& Black (as the picture shown) Connecting Shank (approx.): 1/4 inch (6mm) Quickly convert your quick change hex shank driver into a drill Unlimited use in automotive, Garages, Warehouses, Offices, Homes etc. Instantly convert impact driver to hold non-quick change drill & driver bits Package Included: 1 x Keyless Drill Chuck Note: Please allow minor error due to the hand measurement. Item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.