The KNIPEX Ratcheting Insert Box-End Wrench (21mm) is engineered for precision and efficiency in fastening tasks. Crafted from high-grade chrome vanadium steel, this wrench offers exceptional durability and resistance to corrosion. Its innovative ratcheting feature allows for seamless operation in confined spaces, eliminating the need for constant repositioning. This tool adheres to ANSI standards, ensuring reliability and safety during use. Perfect for automotive, industrial, and home projects, the compact design makes it easy to carry and store, making it an essential addition to any toolbox.