Introduction Features and Benefits: Extra deep length 6-point impact socket Over 4-3/8″ bolt clearance depth Made from high quality chrome-molybdenum steel Heat treated for strength and durability Size markings are hard stamped into the socket for easy identification 1/2 in.; Drive x 1-1/2 in.; Extra-Deep Length 6-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.