This die fits the 105 Standard Duty and Heavy Duty Tube and Pipe Bender for bending NPS 1/4 Schedule 40 Pipe at a 3-1/2" centerline radius with a maximum degree of bend of 180 degrees after springback. Our "What am I bending?" page (located under the Resources tab) is a useful tool if you're not sure what the difference between tube and pipe is. Our benders are rated for bending Schedule 40 mild steel pipe. For bending any other types of material (i.e. aluminum and stainless) or Schedules, call our tech department at +1 (813) 986-9000.