Description This drill chuck has unique locking function, self-locking methods, more effective in preventing work loose off. Instantly convert impact driver to hold non-quick change drill & driver bits. Easily locks onto and releases drill bits. Features - Color: Black - Material: aluminum alloy - Size: 7.2x2.4x2.4cm - Keyless chuck easily locks onto and releases drill bits. Instantly convert impact driver to hold non-quick change drill & driver bits. - Made of aluminum alloy, strong and durable. - Can be used with drill bits from 0.3mm to 8mm Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!Package list: 1 x Drill Chuck