This is a set of tube pipe expander, it includes 7/8, 3/4, 5/8, 1/2, 3/8, 1/4 this tool in 6 sizes, it is useful for you to use it when you need it to spend the pipes, it can save your time and energy, make your work easier, go ahead and try it, it won't let you down. < br/> 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 install air conditioners, you can use it to expand the copper pipes, then make the two pipes interconnected. It is very easy to use and can save your time and energy. It is small size, so you can take it anywhere you want to use it. Please note that this tool needs to 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. Features: 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 / 7.4 ounces Packing List: 6 * Pipe Expander