Features This Proto® 12-point socket is ideal for use on stubborn or damaged fasteners, and also on fasteners made from soft materials. The TorquePlus™ drive configuration allows for a quick and easy socket engagement to the fastener flats, not the corners. Uses a radius-corner design that shifts contact area and stress away from the fastener corners and distributes contact stresses over a large area of the socket, minimizing slippage. Its internal design minimizes fastener rounding and allows the user to more easily turn worn, rounded, or rusted fasteners. Ball detent design with side locking hole. Material / Alloy Steel Finish / Satin Socket Depth / Standard Drive Type / Square Drive Size / 3/4 in Standards / ASME B107.1 Number of Points / 12 Overall Length / 2 29/32 in