3/8 in.; Drive x 21mm Deep Length 6-Point Impact Socket. They also allow up to 20% more torque to be applied than on other impact sockets. The shift in pressure allows us to reduce the socket wall thickness, increasing access to tight areas.
Grey Pneumatic 1" Drive 6 Piece Hex Driver Metric Set
Grey Pneumatic 1" Drive x 2-5/16" Deep Socket
Grey Pneumatic 1" Drive x 13" Extension w/ Pin Hole
Grey Pneumatic 1" Drive x 3/4" Deep Socket
Grey Pneumatic Assorted Drive 12 Piece Int. Star Impact Driver Set
101C) New old stock Grey Pneumatic 1" Drive x 22mm Hex Driver Socket (4922M)