Strong MagnetUsing strong magnetic magnet, which can control the inner cleaning brush to follow the outer handle. The interior is cleaned by wiping the exterior. Due to the particularity of ultra-white aquariums and acrylic aquariums, it is recommended to use the intermediate filter cotton. Floating Aquarium Glass CleanerInternal floating prevents the brush (the part of the water tank) to sink into the bottom of the aquarium, making it easy to remove from the water tank. High QualityMade of high quality plastic material, sturdy , anti-corrosion and durable.; Easy to clean Soft bristles, the internal parts can be cleaned quickly and efficiently without scratching the glass of the aquarium. It comes with an algae scraper, the blade is easy to install, and can effectively and easily scrape algae while cleaning the aquarium. Please note that the magnetic brush has strong magnetism, so do not let children touch it, which is dangerous. It is strictly forbidden for patients with pacemakers to use it. Number of shipments: 1 pcs