General description This is a Draper 771-LM 9mm hexagon socket designed for professional use, offering high durability and precision. Manufactured from chrome vanadium steel, it is hardened, tempered, and chrome plated for corrosion resistance. Technical specifications Material: Chrome vanadium steel Finish: Chrome plated Size: 9mm (3/8 inch) Drive Size: 1/2 inch square drive Type: Hexagon socket Chamfered end for easy nut engagement Includes a hole for driving accessory with spring-loaded ball bearing Compatibility and accessories Compatible with standard 1/2 inch drive tools Suitable for use with various driving accessories that fit the hole for spring-loaded ball bearing Installation Insert the socket onto a compatible 1/2 inch drive ratchet or wrench Ensure the socket is securely attached before use Usage Use for tightening or loosening hexagon nuts and bolts Ideal for professional and DIY home improvement projects requiring durable tools Other information Sold loose, not in a set