CASOMAN 9 Pieces Extension Bar Set, 1/4″, 3/8″ and 1/2″ Drive Socket Extension, Premium Chrome Vanadium Steel with Black Phosphate Finish

This CASOMAN 9 Pieces Extension Bar Set, Premium Chrome Vanadium Steel with Black Phosphate Finish. The extension bar is Made from premium CR-V steel alloy (50BV30) with a corrosion-resistant black phosphate finish, providing the durability for a hard use. Spring loaded detent ball on adapter ends provide secure fit into sockets, delivering support when used with high torque impact drivers.