The RIDGID 47745 1/2" to 3/4" NPT Alloy Steel Universal Dies are high-quality pipe dies designed for right-hand threading. Made from durable alloy steel, these dies are suitable for creating NPT threads in pipes ranging from 1/2" to 3/4" in size. Ideal for use in plumbing, pipe fitting, and HVAC. These pipe dies from RIDGID provide reliable and efficient threading solutions.