New 6PCS Air Conditioner Copper Tube Expander Swaging Tool Drill Bit Set Flaring Brand new and high quality Rugged and easy to use, your good assistant for work and life. A full range of forging tools makes it easier to expand HVAC pipes. Preserve the ductility of copper/aluminum during die forging to avoid cracks and leakage. Come with multiple sizes ranging from 1/4inch, 3/8inch,1/2inch, 5/8inch, 3/4inch, 7/8inch. Suitable for hard and soft copper standardized, easy to braze swaging set. The forging stopper will provide a large swaging depth to achieve a perfect fit. When installing the air conditioner, expand the copper pipe to connect the two copper pipes with each other. Package Included 6 x Tube Expander Listing and template services provided by inkFrog