6-point hex socket for maximum torque transfer to the face of the fastener Precision cold-forged, hardened and tempered chrome vanadium steel Fully polished and nickel chrome-plated for durable corrosion resistance Chamfered ends and thin walls for positive location on fastener Knurled ring provides grip and bearing hole provides solid connection to the toolManufacturer: SLTL4 Model Number: 477607 Package Quantity: 1 Part Number: 477607 Size: 11 mmSilverline 477607 Socket 3/8" Drive 6pt Metric 11 mm