1/2" to 2" Die Dies Set 6 Size Pipe Threader Threading 172289901. Professional Use There are seven matching sizes of this threader, 1 2", 3 4",1", 1 1 4", 1 1 2", and 2". Different sizes can meet your different work needs. 2. High Quality The whole set is made of high quality material, which is sturdy and durable. Sturdy steel structure makes it long service life. Threads are smooth and accurately marked. 3. Ergonomic Design It was made by ergonomic design, perfect for long hours at work. Non slip and wear