Fix pipe threads, plugs and fittings without damaging exterior Rust resistant pipe extractor hex body sizes ⅜, ½, ¾, 1 inch Fits open/closed end wrenches and meets government GGG-W643b General Tools Internal Pipe Wrenches are designed to rescue HVAC and plumbing professionals from broken pipe threads, plugs and fittings. The machined and heat-treated cams easily grab on to broken pipe fragments lodged inside the other pipe. The hex-shaped bodies are made from alloy steel and can be used with open or closed-ended wrenches. General Tools Professional Series Wrenches conform to government specifications GGG-W643b for size and weight. The pipe sizes are marked on each wrench; This internal pipe wrench set includes four wrenches; 3/8 in., 1/2 in., 3/4 in. a.
3/4" ball valve with male thread broke off and a portion stuck in my air compressor. This tool didn't provide enough grip inside the broken pipe to turn it out. Just slipped inside the pipe. Ended up buying pipe extrator set that you pound in tight with a hammer and then turn out broke off piece. May work in certain cases however in my situation it didn't work.