3/8" Drive x 5/16" Square Male Pipe Plug Socket

3/8" Drive x 5/16" Square Male Pipe Plug 4-Point Impact Socket. Our impact sockets grip the fastener across a broader contact area, reducing chance of rounding off fasteners. 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.