Proto 1/2" Drive 6 Point 21mm Deep Impact Socket - Metric

Proto's 6 point impact sockets are ideal for use on stubborn or damaged fasteners, and also on fastners made from soft materials. The TorquePlus design is a high performance drive configuration which allows for quick and easy socket socket engagement that minimizes fastdner rounding, helping to extend fastener life, and allows you to easily tighten or loosen rounded, worn, or rusted fasteners. Each socket is stamped for easy identification.