Features 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 corners and distributing contact stresses over a large area of the socket, minimizing slippage. The TorquePlus™ internal design minimizes fastener rounding, helps to extend fastener life, and allows the user to more easily turn worn, rounded, or rusted fasteners. Material / Alloy Steel Finish / Chrome Socket Depth / Standard Drive Type / Square Drive Size / 1/2 inch Standards / ASME B107.5M, AS954E S3.81 Number of Points / 12 Overall Length / 1 25/32 inch