Main function: This pipe expander is mainly used for expanding plastic pipe, copper pipe and aluminum pipe. Steps Operation: When using a tube expander, insert the copper tube into the mounting hole of the appropriate tube diameter, tighten the mounting nut on the bracket, and tighten the copper tube. Factory Standard: The tube expander has a precision threaded insertion tube and long handle that conforms to the factory standard. High Strength Material: The flare bar is made of high strength material to prevent the tube from slipping during the flaring process. Assembled product: The tube expander is assembled by the ductile iron bracket and rail, which is easy to disassemble, durable and not easy to damage. Specification: Item Type: Flaring Tool Set Material: #45 Steel Model: CT-195 Specifications: 3/16, 1/4", 5/16", 3/8", 7/16", 1/2", 5/8".