Auto-rotating 300RPM brush head: This brushless electric solar panel cleaning brush features an auto-rotating head at 300RPM to remove stubborn stains from panels, signs, and billboards. With a 60cm/24" cleaning width, it boosts efficiency by up to 80% and reduces manual labor. 360° rotating brush head: The solar panel washing roller brush has a fully rotating brush head with adjustable angle and height, ensuring tight contact with panels. It eliminates cleaning dead corners for top-tier results, adapting to various panel angles. 1.66–7.5m telescopic pole: The handheld cleaning brush includes a telescopic pole adjustable from 1.66m to 7.5m with 5 sections of 150mm each. A snap-on design locks the length securely during use, preventing accidental shrinkage. Lightweight aluminum pole & nylon bristles: Made from premium aluminum, this photovoltaic panel cleaning brush is sturdy yet lightweight for extended use. High-density nylon bristles scrub dirt effectively without scratching solar panels or windows. Dry/wet modes & multi-scene use: This outdoor cleaning kit features a water outlet for easy switching between dry and wet cleaning modes. Lightweight and versatile, it is ideal for roofs, mountain, fishpond, and high-pile solar power plants.