Socket

Proto Tools is an American industrial hand tool company. Founded as Plomb, it is presently a division of Stanley Black & Decker. The company is credited with creating the first combination wrench in 1933. 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 corners and distributing contact stresses over a large area of the socket, minimizing slippage Features two through holes and a groove to accept a Proto® Retaining Ring or pin and o-ring to help secure the socket to the drive tool anvil. Stamped size for easy reference & Side locking hole