Easy-to-use HOG TIE Boiler Tube Weld Alignment Clamp rapidly and accurately aligns boiler tube ends to reduce the risk of failure from misalignment when welding water wall boiler tubes. High strength steel clamp is offered in seven sizes for tube from 1.75 to 3.25 O.D. Units can be supplied alone or as a kit with an impact wrench and socket, four 0.5” bolts, two spare through-hole inserts, two spare threaded inserts, and a metal carrying case.