Model 8 Kit containing 3/8-Inch, 1/2-Inch, 3/4-Inch and 1-Inch heads Free-floating and self-centering mechanism Designed to expand tubing for fast, accurate joints in soft copper, aluminum and soft steel tube without using fittings. Ridgid covers its products with a lifetime warranty against defects in material or workmanship for the life of the tool, Manufacturer: Ridgid