Milwaukee M5-0.90 mm Straight Flute Plug Tap is precision machined to create or repair clean and accurate internal threads with ease. This plug tap features long-lasting laser-etched sizing for the clearest markings and is coated with a protective Black Oxide finish to resist corrosion. Its square shank fits all standard tap handles or tap wrenches and is designed specifically for through-hole threading. Built for durability, this tool is i for cutting threads in common metals such as brass, aluminum, and mild steel. For optimal performance, it is to use this plug tap with cutting fluid. Model Number: 49-57-5128