Description: 1/4 Inch Hex Shank Keyless Drill Chuck Quick Change Adapter Converter 0.3-3mm Specifications: Material: Alloy Total length: 45 mm Color: Sliver and Black Connecting Shank: 1/4 inch (6 mm) Clamping Range: 0.3-3 mm Quantity: 1pc Features: 1.Keyless chuck finger-tightens for easy bit changes. 2.Quickly convert your quick change hex shank driver into a drill. 3.Unlimited Use in Automotives, Garages, Warehouses, Offices, Homes etc.