CALIDAKA 6pcs Swaging Tool Drill Bit Set Professional Manual Copper Pipe Swaging Tool Drill Bit Repairing Set with 1/4, 3/8, 1/2, 5/8, 3/4 Bits

Features: Swaging Tool: A product of the swaging process with this tool making their way into HVAC systems lineset. Function: When air conditioning is installed, expand copper tube, make two copper tube mutual link. (To be installed on hand electric drill.) Material: Made of bearing steel material, durable and not easy to break, wear resistant to use. Multi Size: 7/8", 3/4", 5/8", 1/2", 3/8", 1/4", 6 different sizes per set of your choice to meet your needs. Easy to Install: Perfect for installers, no matter if you are just learning or have been doing it.