Item Type: Magnetic Algae Scraper Material: Plastic, Neodymium Magnet Use: Fish Tank Magnetic Brush Applicable Fish Tank: Within 80cm/31.5in Applicable Tank Wall Thickness: 6mm/0.2in Size: Approx. 75x135x50mm / 3.0x5.3x2.0in 1ERGONOMIC HAND GRIP SHAPE: Floating magnetic aquarium glass cleaner features an ergonomic hand grip shape, frosted texture and non slip design. 2DOUBLE BLADE: Fish tank algae scraper adopts double headed scraper to clean comprehensively and optimize scraping effect, self floating function can be used in all corners. 3EASY ALGAE REMOVAL: Inner brush sealed hollow design, remove brush suspension not sink, easy to remove algae, outer brush soft bristles do not hurt the tank wall. 44X STRONG MAGNETIC SUCTION: Aquarium magnetic brush has 4x strong magnetic suction, ten years without demagnetization, durable scraping blade, a scrape that is clean. 5NOTE: Fish tank magnetic brush has strong magnetism, please don't break it by force to cause accidental injury, to separate the magnetic brush need to twist 90 degree.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.1 x MagneticAlgaeScraper 2 x Scraping Blade