General Tools Internal Pipe Wrenchs, Set of 4 (139/4)

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 wrech set includes four wrenches; 3/8 inch, 1/2 inch, 3/4 inch, and 1 inch