The MILWAUKEE® Universal Pipe Threading Dies are designed for use with MILWAUKEE® NPT Pipe Threading Die Head w/ Micro-Adjust (49-16-5100). MILWAUKEE® pipe threading dies are offered in alloy, high speed, and high speed for stainless. Each die type is available in sizes ½ - ¾” and 1” – 2”. These dies are also compatible with Ridgid Universal Die Heads (NOS. 504A, 711, 713, 811A, 815A, 816, 817, and 842). Stamped size, type, and alignment numbers for easy identification and installation.