Vulcan MT6580219 Deep Impact Socket, 21 mm Socket, 1/2 in Drive, Deep Drive, 6-Point, Chrome Molybdenum Steel

This Vulcan impact socket helps you tackle the toughest jobs with a chrome molybdenum alloy steel grip that won't let go. The solid durability keeps it driving through job after job. The steel frame reduces wear and increases torque on fasteners by placing force on fastener walls rather than fastener corners. The corner design provides the strength and flexibility to handle high torque impact tools.