6PCS HVAC Repairing Set, Boring Drill Bit Air Conditioner Copper Tube Expander Manual Copper Pipe Swage Soft Copper Tubing Tool Bit with 1/4'', 3/8'', 1/2'', 5/8'', 3/4'', 7/8'' Bits Q-M-045
Material: It is made of bearing steel, which is not easy to break and wear-resistant; The surface is blackened to prevent the bit from rusting
Size: There are 6 different sizes, including 1/4 ",3/8", 1/2 ",5/8", 3/4 "and 7/8" to meet different needs
Use: according to the diameter, select the corresponding pipe expanding head to expand the copper pipe; Then insert the whole head into the tube, and apply uniform force until it is formed
Packing: A total of 6 different sizes of rotary forging drill sets for HVAC
Easy to use: A complete set of tools of different models, used with hand drill, easy to install