ITEM NAME:6pcs Multifunction Copper Pipe Swaging Tool Drill Bit Set Portable Bearing Steel Features: Swaging Tool: A product of the swaging process with this tool making their way into HVAC systems lineset. Function: When air.Swaging Tool: A product of the swaging process with this tool making their way into HVAC systems lineset. 6 x&;nbsp;Copper Pipe Swaging Tool Drill Bits. Function: When air conditioning is installed, expand copper tube, make two copper tube mutual link.