GreatNeck SK9M 3/8 Inch Drive Socket 6 Point 9MMGreat Neck 9mm Metric Socket 3/8" 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 SK9M 3/8 Inch Drive Socket 6 Point 9MM Features:; 3/8" drive; 6 point; Ratchet (2542-7626); Metric sockets; 9mm