XTREMEPOWER Heavy Drill Chuck Size SDS Adaptor Key Set Female Description: instantly convert impact driver to hold non-quick change drill & driver bits quickly convert your quick change hex shank driver into a drill keyless chuck finger-tightens for easy bit changes unlimited use in automotives, garages, warehouses, offices, homes. Material: steel manual lock lenght: approx. 58mm/2.28inch nut rod interface diameter:approx. 13mm/0.51 inch, key interface diameter:6mm/0.24 inch, shank connecting rod length: 64mm/2.60 inch nut diameter 13mm/0.51 inch, manual key (Lx H x Dia.) 80*40*6mm/3.15 *1.57 *0.24 inch packet includes : 1x keyless drill chuck with adapter