strength steel construction provides durability with water resistance and rust resistance. Chromeplated surface with a red and black twocolor handle for easy identification and comfortable grip. Compatibility and size Supports metric 622 mm and imperial 1/4 to 7/8 inch screws Jaw and wheel spine made from 40Cr steel; bolt made from 50CrV steel Gear mechanism designed for reliable operation Materials and manufacturing Components made from Taiwan steel Produced with automatic machining Taiwan heat treatment process used to enhance material properties Design features Sleeve hanging design protects the socket head from wear and from dropping into maintenance spaces Quick release mechanism for fast tool changes Quick stripping function for efficient work Antirust performance, wear resistance, and overall hardening Use scenarios Automotive maintenance and : suitable for fast and secure handling of metric bolts in engines and suspensions Industrial machinery service: effective for assembling and disassembling components with metric 622 mm or imperial 1/4'–7/8' screws Home workshop and bicycles: convenient for general maintenance tasks requiring reliable grip and rapid socket changes This product combines strong, durable construction with practical features that improve workflow, compatibility across common bolt sizes, and longterm wear resistance.