* High-Quality Materials : The telescopic pole is made of aluminum with black anodizing process,strong and capricious enough,good enough anti-corrosion performance. Non-slip sponge comfortable handle.PP bristle material and full brass connector, durable and beautiful.The design of the water pipe passing through the middle of the telescopic pole makes it very easy to unfold and fold.The nylon material angle adapter allows the brush head to be flexible to achieve the best cleaning angle.Photovoltaic Panel Cleaning Free connection, steel buckle fastening, perfect closure, easy to install and easy to disassemble.The lever also has a clever tilting head so you can get better stretching and cleaning.