General description This is a professional-quality 1/4" drive metric deep socket, specifically a 4mm size. It is designed for durability and precision, suitable for various mechanical and DIY applications. The socket features a chamfered end for easy nut alignment and entry, and a hole for a spring-loaded ball bearing to secure accessories. Made from hardened, tempered, and chrome-plated chrome vanadium steel, it offers corrosion resistance and long-lasting performance. Technical specifications Material: Chrome vanadium steel, hardened, tempered, and chrome plated Size: 4mm Drive size: 1/4 inch Type: Deep socket Overall length: 50mm Standards: DIN 3124/ISO 2725 and DIN 3120/ISO 1174 Compatibility and accessories Compatible with 1/4" drive ratchets and extensions Designed to work with various nuts and bolts matching the 4mm size Installation Attach the socket to a compatible 1/4" drive ratchet or wrench Ensure the spring-loaded ball bearing secures the socket onto the drive tool Usage