RIDGID 36895 Model OO-R Die Head, 12R Alloy Die Head comes with 3/4-inch High-Speed, Factory Set Dies that Deliver Clean, Precise 14 TPI High-speed manual alloy die head includes 3/4-inch (18 mm) diesfor clean, accurate threading Right hand directional cutting motion delivers 14 TPI from die head RIDGID die head designed to produce clean, precise cuts for pipes measuring up to 3/4-inch (18 mm) NPS Factory set 12R dies create a standard NPT seal that is perfect for use in mechanical and low-pressure applications Ideal for use with the RIDGID line of power drive high-speed pipe threaders