RIDGID 47770 Threading Machine Dies, Right-Handed High-Speed NPT Pipe Dies with Nominal Pipe Size of 1-Inch to 2-Inches for Universal Die Heads,Ridgid Tool Company,47770" /> Fits RIDGID NPT universal machine die heads 504A, 711, 713, 811A, 815A, 816, 817 and 842 High-Speed threading die for stainless steel Threading dies have capacity of 1-inch to 2-inch Right-Hand, NPT (National {American} Pipe Tapered) thread RIDGID 47770 NPT dies have 11-1/2 TPI (Threads Per Inch)