Milwaukee 5/8"-11 NC Straight Flute Plug Tap is expertly crafted for creating or repairing clean and precise internal threads. This plug tap is precision machined to ensure accuracy and features long-lasting laser-etched sizing for easy and clear identification. It is coated with a protective Black Oxide finish to resist corrosion and extend tool life. The square shank design fits all standard tap handles or tap wrenches, making it versatile and easy to use for through-hole threading. Built for durability, this plug tap is i for cutting threads in common metals such as brass, aluminum, and mild steel. For optimal performance, it is to use cutting fluid when working with this tool. Model Number: 49-57-5169