Unroll the copper pipe and make two copper pipe interconnections. Main Features[Copper Pipe Extension]Unfold the copper pipe so that the two copper pipe are connected together after the air conditioner is installed. Ideal for installers, whether you're just learning or doing it. [Multiple sizes]6pcs set with the most popular HVAC pipe diameter: 1/2 inch, 1/4 inch, 3/4 inch, 3/8 inch, 5/8 inch, 7/8 inch. 6 different sizes per set for you to choose from to meet your needs. [High Hardness]Made of premium steel bearing material. The expander set has high and uniform hardness and wears resistance, not easy to deform. Your good assistant for work and life. [Wide Application]The easy expander kit can be used for air conditioning equipment, refrigeration equipment, automotive air conditioning, etc. SpecificationsProduct Weight230GRuce Size1/2 Inch (12.7mm)1/4Inch(6.3mm)3/4Inch(19mm)3/8Inch(9.5mm)5/8Inch(15.9mm)7/8Inch(22.2mm)Package ContentsEasy Expander 6Pcs/SetNoteWhen installing the air conditioner, the pipe expander must be installed on an electric hand drill, and the copper pipes are spread out so that the 2 copper pipes communicate with each other. Due to different display and lighting effects, the actual color of the item may be slightly different from the color displayed on the pictures. Due to manual measurement, please allow slight deviations in the measurement.