A product of the swaging process with this tool making their way into HVAC systems line set, perfect for installers, no matter a beginner or an expert. Made of metal material ,it has high and uniform hardness and wear resistance, and high elastic limit. Features - Color: Silver. - Material: Iron. - Size: 15.50X15.50X4.00cm/6.09X6.09X1.57 inch. - They are suitable for the maintenance and use of car refrigeration equipment such as refrigerators, freezers and air conditioners. - With these practical tools, the copper tube can be easily expanded, accurately positioned. - High-quality materials make the copper pipe expander stronger and longer life. - It is made with excellent craftsmanship, has a reasonable structure, is easy to operate, and can bring you more convenience. - The excellent workmanship of our product will bring you a good using experience.