Proto® - Internal Pipe Wrench Sets 4 Piece Internal Pipe Wrench Set - Sold as 1 EachEccentric cam action engages wrench against the walls of the pipe. Ideal for removing broken threaded pipe ends, plugs, and fittings. Installation and removal without thread damage. Made from hardened steel and plated to help prevent rust. Hex body allows for use of adjustable wrench for added torque Includes: Pouch Opening Size: 3/8 in, 1/2 in, 3/4 in, 1 in