Silverline 11mm Socket 3/8" Drive 6 Point Metric Mechanical Engineering - 477607. This 6-point hex socket is designed for maximum torque transfer to the face of the fastener. It is precision cold-forged, hardened, and tempered from chrome vanadium steel. The socket is fully polished and nickel chrome-plated for durable corrosion resistance. It features chamfered ends and thin walls for positive location on the fastener, and a knurled ring provides grip. The bearing hole provides a solid connection to the tool. Weight: 0.03 Pounds.