Proto J3700M Features

• Satin finish provides corrosion resistance and a slip resistant grip
• 12 point flare nut box end allows for fine indexing, helping to improve speed and access
• Fits 4, 6 and 12 point fasteners
• Flare nut box ends incorporates the TorquePlus system
• Proto TorquePlus wrenches 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 wrench 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 flare nut box end, 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