Chrome vanadium steel hex metric socket. Chrome-plated satin steel finish. Chamfered end for positive nut location. Radius design for added torque and long life. Knurled band, and hole for positive ball retention. To DIN3124/ISO2725 and DIN3120/ISO1174. 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 chrome vanadium steel, fully polished and nickel chrome-plated for durable corrosion resistance. Chamfered ends and thin walls ensure positive location on the fastener, while the knurled ring provides grip and the bearing hole offers a solid connection to the tool. Weight: 0.0661386786 pounds.