Feature: 1. DOUBLE BLADE: Aquarium magnetic brush uses a double headed scraper to optimize the scraping effect, comprehensive cleaning, and 4x strong magnetic suction. 2. SELF FLOATING: Fish tank glass scrubber has a self floating function, can be easily used in all corners, saving effort. Inner brush sealing hollow, remove the brush suspension does not sink. 3. EASY ALGAE REMOVAL: Fish tank magnetic brush is easy to remove algae, the inner brush is hard and durable, the outer brush is soft and does not hurt the tank wall. 4. NON SLIP GRIP: Magnetic aquarium glass algae scrapers are designed with non slip grip, ergonomic hand grip shape, frosted texture, comfortable grip. 5. CARBON FIBER SCRAPER: Floating magnetic aquarium glass cleaner comes with an extra carbon fiber scraper, which is tougher and more durable to meet your needs. Specification: Item Type: Aquarium Magnetic Brush Material: Plastic, Neodymium Magnet Use: Fish Tank Magnetic Brush Applicable Fish Tank: Within 40cm/15.7in Applicable Tank Wall Thickness: 4mm/0.2in Size: Approx. 68x106x38mm / 2.7x4.2x1.5in. Package List: 1 x Aquarium Magnetic Brush2 x Scraping Blade2 x Carbon Fiber Scraper Note: 1. Pacemaker wearers are prohibited to approach.2. Please do not use this product for acrylic, plastic crystal and super white fish tank.3. Please allow some error due to manual measurement.4. Magnetic brush magnetic powerful, please do not force break open cause accidental injury, separate the magnetic brush need to twist 90 degree.