INTERNAL & EXTERNAL PIPE THREADING: This 3-piece PVC pipe threader kit creates both male and female threads on 1/2″, 3/4″, and 1″ PVC, PP, and PE plastic pipes for plumbing and irrigation repairs. CLEAN, ALIGNED THREAD FORMATION: The internal and external threading tools help create smooth, well-aligned threads for secure-fitting pipe connections with fewer rough or uneven cuts.