1. Round Thread Die Size Thread Size: M6; Outer Diameter (OD): 20mm / 0.8'; Thickness: 7mm / 0.28', Number of Flute Holes: 4 2. Wide Applications Commonly used for repairing, cutting, or creating threads on screws, pipes, fittings, rods, bars, or other cylindrical objects. Suitable for machining stainless steel, aluminum alloy, cast iron, copper, iron, aluminum, and plastic. 3. Easy to Use This round die is specifically designed for repairing or machining external threads and is an essential tool for any workshop or toolbox. With its strong practicality, you can easily damaged threads or create ones. 4. Alloy Tool Steel The 9SrCi alloy tool steel round die features torque, wear resistance, and durability. The die is equipped with a tapered locking hole, ensuring a secure fit that won't loosen during external thread cutting.