Ridgid 75992 Model RT3422 3/4" - 2" Male NPT Tapping Set heavy Duty design. Sturdy machinedcorrosion-resistant materials for dependable lifelong benefits. Easy to use. At only 21"this Lightweight and compact tool is great for tight quarters and awkward locations. Tapping Set has Built-in Bleed valve which allows for easy purge of chips. Independent cutter feed gives the operator total independent control of the cutter feed rotation for optimal Saw life. The RT3422 3/4" - 2" Tapping Set is capable of tapping into Steelcast ironductile iron and plastic pipe.