Premium & Durable Fish Tank Magnet Cleaner exterior is made of waterproof ABS with a scratch-resistant hook magic sticker and fabric cushion in the middle. It can quickly wipe dirt inside the tank and scrub dust outside the aquarium without scratching the glass, making it safer and easier to use. Super Strong Magnetic Force: Aquarium glass cleaner features an anti-rust, high-strength internal magnet. Simply move the outer brush gently to clean every corner of the inner aquarium wall without getting your hands wet or disturbing aquatic life. Non-slip Comfortable Handle: The magnetic algae scraper has a textured non-slip surface for a comfortable grip, easy handling, and smooth movement. A great tool for fish enthusiasts to maintain a clean and healthy environment for their fish. Mini Floating Design: Aquarium magnet cleaner brush size: 10 x 8 x 2.3 cm, ideal for small glass aquariums with glass thickness of 3-6 mm (under 20 gallons). Features a floating design so the scraper remains on the water's surface if detached, preventing it from sinking and making it easy to retrieve with tweezers. Note: Keep away from magnetic cards, watches, and other magnetic-sensitive items. Not suitable for individuals with pacemakers. Specification: Material: Plastic/Magnet Size: 10 x 8 x 2.3 cm Color: Blue