The #139ST Three-piece Internal Pipe Wrench Set, Government-Compliant is ideal for installing and removing pipe nipples without scratching or denting the pipe surface. It's also good for removing pipe plugs, broken pipe ends, and rusty fittings lodged inside pipes.

• Hex body can be turned by fixed or adjustable wrench
• Heat-treated alloy steel cams are plated to resist rust
• Meets U.S. Government Specification GGG-W643b