M5510400 - Button Dies Pro Series M 1? OD Sutton Tools Pro Series Button Dies are used for cutting a new male/external thread on studs. Made from High Speed Steel. Suitable for cleaning existing threads in tough applications. Produce more accurate threads than carbon dies. Solid round die fits into adjustable guide or plain die stock handle Cutting teeth provide a precise thread Made from M2 High Speed Steel (HSS) offering the best combination of strength, heat & wear resistance Bright finish for general purpose applications, non-ferrous metals & plastics