of Pieces:4pcs setProduct name:pipe threading dieThreads Types:BSPT,BSPP, NPT and Metric ThreadingThreading dies material:alloy and HSS are availableTapered threading dies sizes:1 4"-3 8",1 2"-3 4",1"-2",2 1 2"-3",2 1 2"-4"Metric threading dies sizes:M12,M14-16,M18-22,M24-27,M30-33,M36-39,M42-45,M48-52Threading Dies Customize Service:Available