These Vevor threading machine dies are designed for cutting clean, accurate NPT threads on 1" to 2" pipes. Made from high-speed steel, they offer strong hardness, wear resistance, and dependable performance under demanding use. The right-handed die set is compatible with Vevor split-type machines and RIDGID universal die heads including 504A, 711, 713, 811A, 815A, 816, 817, and 842. Sharp, evenly spaced cutters help produce precise threads for secure, leak-free connections. The numbered sequence design also makes installation and replacement quick and straightforward.