Milwaukee M12-1.25 mm Straight Flute Plug Tap is expertly crafted to create or repair clean and precise internal threads. These plug taps are precision machined and feature long-lasting laser-etched sizing for the clearest markings, ensuring accuracy every time. They are coated with a protective Black Oxide finish to resist corrosion and extend tool life. The square shank design is compatible with all standard tap handles or tap wrenches and is i for through-hole threading. Built for durability, these taps are for cutting threads in common metals such as brass, aluminum, and mild steel. For optimal performance, it is to use these plug taps with cutting fluid. Model Number: 49-57-5161