The Sealey 3/4" Drive 21mm Deep Hexagon Impact Socket is specifically sized for common wheel nut and hub applications across many European and Asian vehicles. This versatile 21mm socket is particularly valuable for tyre services, brake maintenance, and suspension work where deep access to recessed fasteners is essential. Featuring drop-forged chrome molybdenum construction, this impact socket provides the exceptional strength and durability demanded by professional technicians. The WallDrive® configuration engages the flat sides of hex fasteners, delivering superior grip whilst protecting against the rounding damage that conventional sockets can cause. The deep design ensures you can reach fixings on extended studs and work effectively with recessed components. This socket is hardened and tempered specifically for air impact wrench use, maintaining its structural integrity even under sustained high-torque operation. The phosphate finish offers excellent corrosion resistance, preserving the socket's performance and appearance throughout its working life. Features and Benefits: • 21mm deep socket for European and Asian vehicle applications • WallDrive® technology prevents fastener damage • Drop-forged chrome molybdenum steel construction • Phosphate finish resists workshop corrosion • Designed for air impact wrench durability • Lifetime guarantee provides reassurance Specifications: Brand: Premier Depth: Deep Drive: 3/4"Sq Material: Chrome Molybdenum Nett Weight: 0.36kg Size: 21mm