The De Neers - 1 1/2 Drive, 400 mm Impact Extension Bar has a top covering of zinc, iron, or manganese phosphate salts. The layer of black crystals provides an excellent protective shield against the common corrosive elements. In addition, 1 1/2 Drive, 400 mm Impact Extension Bar has a chromium-molybdenum steel core which is corrosion resistant and durable. The Impact Extension Bar extends the limits of the sockets, and with these bars, they can reach the highly cramped spaces where you cannot operate the wrenches. In addition, the Extension Bar has a high value of ductility, enabling it to withstand the vibrations from the impact wrenches and the power tools.
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