Features: 1.PREMIUM MATERIAL: Aquarium magnetic algae scraper fabric is soft and won't tear. Clean the inner wall of the fish tank without residue, could be the best choice for you. 2.HIGH PERFORMANCE: Small magnetic algae scraper is not afraid of water leakage and preserves the magnets. Don't worry about rust affecting fish growth. 3.EFFECTIVE CLEANING: Small aquarium glass cleaner effectively cleans algae in the aquarium without getting your hands dirty. It can be placed in the corner after use without affecting fish activity. 4.ERGONOMIC DESIGN: Small magnetic glass cleaner fits easily in the hand, is light and cute, and is very comfortable and smart to use. Clean aquarium glass in just a few minutes. 5.APPLICABLE FISH TANK TYPE: Aquarium magnetic glass cleaner is suitable for various types of fish tanks such as 3?5mm/0.1-0.2in glass or acrylic fish tanks. Both salt water and freshwater are fine. Specification: Item Type: Aquarium Magnetic Algae Scraper Material: ABS Size: Approx. 25x37mm / 1.0x1.5in PackageList: 1 xAquarium Magnetic Algae Scraper Note 1. Safety Tips: Patients with pacemakers are strictly forbidden to use 2. Please allow some error due to manual measurement