Universal hex shank for easy access to electric screwdrivers. [Wide Application] Quickly convert any 1/4 inch cordless electric screwdriver into a drill or grinder. One-handed operation ensures your work is done correctly. 1/4 inch hex shank - Universal drive 1/4 inch hex shank for easy access to electric screwdrivers. Quickly convert any 1/4 inch cordless electric screwdriver into a drill or grinder. One-handed operation ensures your work is done correctly. 0.3-6.5MM range - The chuck can be used with drills from 0.3mm to 6.5mm, making it perfect for fine drilling not possible with standard chucks. Color: Silver + Black Material: Aluminum alloy + carbon steel Size: 90mm length Hex handle drill chuck Range: 0.3mm-6.5mm with 1/4 inch (6.35mm) 57mm length Hex handle drill chuck Range: 0.3mm-3.6mm with 1/4 inch (6.35mm) 61mm length Round handle drill chuck Range: 0.3mm-3.4mm with 1/8 inch (3mm) 59mm length Round handle drill chuck Range: 0.3mm-3.4mm with 1/16 inch (2.35mm) Package Contents: 4*Drill chuck quick change adapter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.