Efficient cleaning solution: The telescopic water supply brush is designed to facilitate cleaning of solar panels, ensuring optimal performance and longer life of your solar ADJUSTABLE LENGTH - With its telescopic function, this window cleaning pole can be extended to great heights, allowing it to clean large solar panel installations without the need for ladders or scaffolding Water supply design: The built-in water supply provides a continuous flow of water to effectively remove dirt and dust from the glass surface, making it an important tool for the maintenance of solar panels Durable construction: the telescopic brush for water supply pole is built with durable materials to withstand outdoor conditions, ensuring a reliable and long-lasting cleaning solution for your home or business VERSATILE: This tool is not only suitable for cleaning solar panels, but also for windows, roofs and other hard to reach surfaces, making it a versatile addition to your cleaning tools