MERWOF 1/4 Inch Expander Head for HVAC Tube Expander Tool (1/4 inch) - - Amazon.com
Amazon.com: Kozyvacu Copper Pipe Swaging Tool/Tube Expander for HVAC Air Condition Line or Refrigerator Line Repair, Fit for 1/4" 5/16" 3/8" 1/2" 5/8" 3/4" 7/8" : Tools & Home Improvement
Amazon.com: Super Stars Copper Flaring Tools for 1/4" - 3/4" HVAC 45° Heavy Duty Eccentric Cone Type Flare Tool Tube Expander for Copper Aluminum Pipes : Tools & Home Improvement