Ridgid 38225 Pipe Die for Geared Pipe Threaders 38225 Dies, 4Pj 3" Npt Hs This item is used for Handtools & Tool Organizers ,Other Hand Tools This product manufacture by United States Pipe die for 4PJ geared pipe threaders High speed RH NPT nominal pipe size - threads per inch: 3-Inch to 8-Inch For manual receding threaders Ridgid covers its products with a lifetime warranty against defects in material or workmanship for the life of the tool