Stanley Proto J5444 1/2-Inch Drive Socket, 1-3/8-Inch, 12 PointStanley J5444 Proto 1 2 inch Drive Socket 1 3 8 inch 12 Point Proto 12 Point Sockets are ideal for use on stubborn or damaged fasteners and also on fasteners made from soft materials. The TorquePlus design is a high performance drive configuration which allows for quick and easy socket engagement to the fastener flats, not the corners. The TorquePlus configuration employs a radius corner design, shifting contact area and stress away from the fastener