Features: 6 piece set, with the most common HVAC pipe diameter: 1/4inch, 3/8inch, 1/2inch, 5/8inch, 3/4inch, 7/8inch. Made of high-quality metal materials, durable to use. Preserve the ductility of copper/aluminum during die forging to avoid cracks and leakage. 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. (It needs to be installed on a hand drill). Sufficient quantity, complete
