General description This 1/4" square drive extension bar is designed to extend the reach of your socket wrench. Made from high-quality chrome vanadium steel, it is hardened, tempered, and chrome plated for corrosion resistance. The extension bar features a spring-loaded ball bearing to securely hold the socket in place during use, making it suitable for both professional and DIY applications. Technical specifications Length: 100mm Drive Size: 1/4 inch Material: Chrome vanadium steel Finish: Chrome plated Standards: DIN 3123 Form B / ISO 3316 Compatibility and accessories Compatible with 1/4" drive sockets and ratchets Can be used with various socket accessories designed for 1/4" drive Installation Insert the extension bar into your socket or ratchet Ensure the spring-loaded ball clicks into place for secure attachment Usage Use to extend the reach of your socket wrench for hard-to-access areas Suitable for professional and DIY tasks involving tightening or loosening fasteners