Round Die: Thread: M16 x 1 (Right Hand); Outer Diameter: 38mm; Thickness: 10mm; Accuracy Class: 6g. Made of M2 (6542) high-speed steel, it offers high hardness, good wear resistance, and excellent cutting performance. Wide Application: Round dies are used for machining, correcting, or cleaning external threads and are suitable for threading materials such as stainless steel, aluminum alloy, cast iron, copper, iron, and plastic. Ideal for maintenance and repair of pipes, panels, and machinery. Features: Conical locking hole; high locking force; no loosening. Suitable for re-threading existing threads in hard materials like metal and for creating new threads in soft materials like plastic. The surface is greased to prevent rust. The thread is clean and easy to repair. Easy to Use: The die is used with a die stock (also called a handle or die wrench). The positioning groove of the die must be aligned with the fixing screw in the center of the wrench. Then insert the screw into the groove and tighten it. A quarter to half turn is necessary to facilitate chip removal through the designated opening. Tips: Apply a suitable lubricating oil to the cutting edge of the thread during threading. The end of the rod should be chamfered at 1 x 45°, without making the chamfer too deep. The diameter of the rod should be smaller (approximately 0.05 mm to 0.15 mm) than the nominal diameter of the required thread.