Draper 20181 409D-MM Hi Torq® Metric Deep Impact Socket, 3/8" Sq. Dr., 23mm

These Draper Hi-TORQ® 6-point deep impact sockets are forged from hardened chrome molybdenum steel.
Black phosphate finish for corrosion protection.
For use with electric or pneumatic impact wrenches with a 3/8" drive.