Description This is a 1/2 inch drive, 21mm hexagon socket designed for manual use. It features a high-performance alloy steel construction with a polished finish for durability and precision. The socket is suitable for tightening or loosening fasteners with a hexagonal head. Technical Specifications Size: 21mm (metric) Drive size: 1/2 inch square Material: High-performance alloy steel Finish: Polished Standards: ISO 2725 / 1174, DIN 3124 / 3120 Type: Standard length, hexagon socket Compatibility and Accessories Compatible with 1/2 inch drive ratchets and extension bars Not suitable for use with impact tools or machines Installation Insert the socket onto a compatible 1/2 inch drive ratchet or handle Ensure the socket is securely attached before use Usage Use manually to tighten or loosen hexagonal fasteners Apply appropriate torque to avoid damaging fasteners or the socket