Impact Adapters, 1/2 in (female square); 3/4 in (male square) drive, 2 in

Designed for superior performance permitting easy interchange of tools from one drive size to another. Oiled black oxide finish. Forged and machined for best fit and unyielding strength. Precision Heat-Treated and tempered for optimal hardness, ductility and durability. Easy to read stamp pattern in order to quickly determine opening size.