Ideal for professional plumbers, construction workers, and handbuilt enthusiasts requiring responsible manual threading explanations for residential / commercial pipe maintenance projects Crafted from stable high alloy steel, the internal external thread tool maintains structural integrity across pipe / PVC / MPP pipes while rest buildup for consistent sanitary achievement This double function half " & 3 / 4 " spell shank pipe threading set creates internal / external threads without tool switching, featuring straight concentric alignment to minimize leakage risks for efficient plumbing prepare accelerate pipe installations and repairs in workshops, industrial locations, or refurbishment scenarios where quick thread alignment and leak proof associations are critical Optimize your plumbing toolkit with this versatile threading die that combines internal / external cutting capabilities and alloy steel durability for multi substance compatibility, Manufacturer: RGYBAO