General description This is a high-quality extension bar set made from chrome vanadium steel, known for its durability and strength. The bars are hardened and tempered with a polished finish for long-lasting performance. Each extension bar features a knurled ring for a secure grip and a spring-loaded ball bearing to ensure a firm hold on sockets. Ideal for professional and DIY use, these extension bars facilitate reaching difficult fasteners with ease. Technical specifications Material: Chrome vanadium steel Finish: Polished Features: Knurled ring for grip, spring-loaded ball bearing for socket security Standards: Manufactured and tested according to DIN3122 and ISO3315 specifications Compatibility and accessories Compatible with standard socket sets Suitable for use with various ratchets and drive tools Installation Insert the extension bar into the socket or ratchet drive Ensure the spring-loaded ball bearing clicks into place for secure attachment Usage Use to extend the reach of