Universal Drive hex for easy access to electric screwdrivers. [Wide application] Quickly transform any 1/4 inch cordless electric screwdriver into a drill or grinder. One-handed operation ensures the proper functionality of your work. 1/4 inch hex - universal Drive 1/4 inch hex for easy access to electric screwdrivers. Quickly convert any 1/4 inch cordless electric screwdriver into a drill or grinder. One-handed operation ensures that your work is functioning correctly. 0.3-6.5MM range - the chuck is compatible with drills ranging from 0.3mm to 6.5mm, making it ideal for fine drilling not achievable with standard chucks. Colour: Silver + black Material: Aluminum alloy + carbon steel Size: 90mm length Hexagonal handle drill chuck Clamping range: 0.3 mm-6.5 mm with 1/4 inch (6.35 mm) 57 mm length Hexagonal handle drill chuck Clamping range: 0.3 mm-3.6 mm with 1/4 inch (6.35 mm) 61 mm length Round handle drill chuck clamping: 0.3 mm-3.4 mm with 1/8 inch (3 mm) 59 mm length Round handle drill chuck clamping: 0.3 mm-3.4 mm with 1/16 inch (2.35 mm) Package Contents: 4*Drill Chuck Quick Change Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the item's color to differ slightly from the actual product. The allowed measurement error is +/- 1-3cm.