Milwaukee 10-24 NC Straight Flute Plug Tap and #25 Drill Bit Set is a comprehensive kit that includes a precision-machined Plug Tap and a matching #25 drill bit designed for creating clean and accurate internal threads. This set features long-lasting laser-etched sizing for easy identification and a protective Black Oxide coating that enhances durability and corrosion resistance. The Plug Tap has a square shank compatible with standard tap handles or wrenches, making it i for through-hole threading in various metal applications. Versatile and durable, this set works well with materials such as brass, aluminum, and mild steel. For optimal threading performance, it is to use cutting fluid during operations. Model Number: 49-57-5525