Easy to use, Only need to gently press the handle to use, let go will automatically reset the package Universal wide-range tubing expander. With Hinge designed, which can avoid the swing of the handle, ensuring stable operation. Convenient expanding and exact expanding result. ube O.D.: 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 7/8"(6mm, 8mm, 9mm, 10mm, 12mm, 16mm, 19mm, 22mm). Robust and durable. Using the most simple structure for brass pipe expanding. Made of zinc-iron alloy materials, long time to use. Hand Expanding Tool Universal Hand Refrigeration Tools are widely used in the maintenance of refrigerators, air conditioners, freezers, and other refrigeration equipment.