Milwaukee M4-0.75 mm Metric 1" Hex Threading Die is the tool for creating or repairing precise external threads. Precision machined and built to last, this hex die features long-lasting laser-etched sizing for clear identification and a protective Black Oxide coating that provides excellent corrosion resistance. Its 1" Hex shape is compatible with the MILWAUKEE® Hex-LOK™ 2-in-1 Threading Handle as well as all standard 1" Hex Die stocks, ing versatility for various threading tasks. Engineered for durability, this threading die is designed to cut threads in a range of metal applications including brass, aluminum, and mild steel. For optimal performance and longevity, it is to use cutting fluid during operation. Model Number: 49-57-5320