Stanley Proto J1139 12 Point Box Wrench 3 4 X 7 8

Product Description Full polish finish provides corrosion resistance and easy to clean surfaces, 12 point box end allows for fine indexing, helping to improve speed and access. Fits 4, 6 and 12 point fasteners, Box ends incorporate the TorquePlus system, exhaustive in our efforts to make the world’s safest tools, Unique in the marketplace, relevant to our customer’s work style, Proto helped build 1934 Fords, the Golden gate bridge and Apollo 538, made in America, making the highest quality tools Comes first, confidence that our tools will help keep them working longer and safer. From the Manufacturer The box end of most Proto wrenches incorporate the TorquePlus wrenching system. The TorquePlus design is a high performance drive configuration which allows for quick and easy wrench engagement to the fastener flats, not the corners. The configuration employs a radius-corner design, shifting contact area and stresses over a large area of the wrench, minimizing slippage. The internal design of the TorquePlus minimizes fastener rounding, helps to extend fastener life, and allows the user to more easily turnworn, rounded, or rusted fasteners.