This is a genuine OEM Milwaukee product. The extension hose is sold as 2 pieces. You can use both at the same time or just put one on. Each extension is a foot long with a maximum of 2 feet extended. Is used on the 0882-20 Compact Vacuum. Sold in the kit with the vacuum. However this is a replacement in case you lose, damage, or need an extra one. Item is of exact same quality, length, and condition as the original.