The PRO-SET tube expander and swaging set can create professional grade one-seam pipe unions in the field. Salvage shorts and scrap to make couplings and re-round deformed tube ends. Multi-facted interchangeable heads ensures equal linear expansion of tube and uniformed wall thickness. Large handle length provides additional leverage for ease of use. Components are heated treated for durability and included storage case provides long-term protection. Ideal for copper, aluminum and soft steel tubing.Includes heads for 3/8'', 1/2'', 5/8'', 3/4'', 7/8'', and 1-1/8''.