Are you still clumsily trying to climb the ladder to clear the tall window? With this window cleaning brush, you can reach windows from the ground faster and safer than ever before. This is a fully expandable water column cleaning system that can be connected to a pure water system or a garden hose. Specification Material: high density aluminum alloy Size: 3.6m/12ft, 5.4m/18ft, 6m/20ft, 7.2m/24ft, 9m/30ft, 10.8m/36ft Weight: 12FT: 3.15kg;18FT: 4.10kg;20FT: 3.70 kg;24FT: 4.45kg;30FT: 5.20kg;36FT: 5.50kg Properties: Freely retractable Area of \u200b\u200bapplication: Very suitable for residential and commercial applications. Window cleaning, photovoltaic panel cleaning, bus / exterior cleaning, large vehicles, trucks, trucks, caravans, boats, etc. A notice: Due to manual measurement, please allow an error of 1-5mm. 2. Due to the light and screen difference, the item's color may be slightly different from the picture. I am very pleased that you can come to our store to shop. It is my honor to serve you. I wish you a happy shopping!