Armstrong 23-078 1-1/2" Drive 2-7/16" Impact Socket USA 6pt. Manufactured from high alloy steel, utilizing the most up-to-date manufacturing processes for greater strength and durability. Socket wall dimensions are optimized to offer strength while providing access to restricted fasteners. Safety collar is cold-formed around the diameter of the socket, insuring pins will not cause injury. Use impact sockets on impact tools only!