SincereetaliThis is a set of tube pipe expander, it includes 7/8, 3/4, 5/8, 1/2, 3/8, 1/4 this tool of 6 sizes, it is useful for you to use it when you need to expend the pipes, it can save your time and energy, make your work easier, go ahead and try it, it will not let you down. Features: This product is made of fine materials, it has a long service life, you do not need to change it often. When you need to install the air conditioners, you can use it to expand the copper pipes, and then make the two pipes interconnected. It is very easy to use and can save your time and energy. It is small in size, so you can take it anywhere you want to use it. Please note that this tool must be installed on the electric hand drill to use it. There are 6 sizes for you to choose, you can use the one you need. Specifications: Material: Steel Color: Black Size: 7/822.2mm), 3/419mm), 5/815.9mm), 1/212.7mm), 3/89.5mm), 1/46.3mm) Package Size: 60 * 60 * 50mm / 2.4 * 2.4 * 2.0in Package Weight: 210g / 7.4ounces Packing List: 6 * Pipe Expander