Stanley Proto J47055TM 1/4-Inch Drive Socket 5.5 Mm, 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 The TorquePlus configuration employs a radius-corner design and shifting contact area The TorquePlus internal design minimizes fastener rounding, helps to extend fastener life