Versatile Wrench Extender Tool that fits 1/2' or 21mm hex wrenches, enabling seamless connection with standard hex head bolts and nuts of common sizes. Practical use and compatibility Designed to extend reach and improve leverage for hex head bolts and nuts that use 1/2' or 21mm hex tools. Widely applicable to automotive maintenance and mechanical equipment installation, as well as professional machine repairs and routine home repairs. Convenient operation Quick plugin interface removes the need for timeconsuming tool changes, helping you work more efficiently. Durable construction Made from strength alloy steel for wear resistance and long service life, even in rugged working environments. Use scenarios Automotive maintenance tasks in tight spaces such as engine bays or suspension work. Mechanical equipment installation and assembly in workshops or facilities. Home repairs and DIY projects that require extended reach and improved leverage.