General description Keyless chuck finger-tightens for easy bit changes. This quick-change SDS-Plus/Hex/Square female adapter is designed for electric hammers, allowing you to instantly convert an impact driver to hold non-quick change drill and driver bits. It features a greater clamping force that effectively prevents drill bits from loosening, ensuring a more reliable locking function. Technical specifications Type: Quick Clamp Clamping Range: 2-13 mm (1/16-1/2 Inch) Connection Sizes: 1/2-20 UNF Material: Metal Color: Black + Silver Measurement allowed error: +/- 1-3 cm Other information Package Contents: 1 set x Adaptor Hardware Note: Light and different displays may cause the color of the item in the picture to differ slightly from the real thing.