GreatNeck 516S 1/4 Drive Socket 6 Point 5/16 Inch Great Neck 1/4" Dr. 5/16" Socket 1/4" Drive 6 Point Chrome vanadium steel construction Great Neck sockets feature Posi-grip No Slip design. The socket wall design provides superior gripping power without rounding the fastener points. Torque is applied to the walls of the fastener head. GreatNeck 516S 1/4 Drive Socket 6 Point 5/16 Inch Features: Individual sockets Standard socket Ratchet (2542-7592) 1/4" drive 6 point