The Best Aquarium Algae Scrubber For Your NeedsProduct Features: Fit fish tank thickness = 048inch (Please choose the right model magnetic brush SML according to your fish tank thickness) Product Size: 40 inch* 22 inch* 3 inch(L* W* H) Rare earth magnet Double clean Design comfortable And Non-slip DesignWhy Do I Select DaToo Aquarium Algae Scrubber1 With rare earth magnets, magnetic stronger, DaToo cleaners will never fall from the fish tank2 Double clean design make you to clean the interior and exterior of the tank simultaneously Only Need Once, All Done3 comfortable And Non-slip Design, let you can easily and quickly finish the fish tank cleaning4DaToo Provides Worry-free After-sales Service (One Year Warranty and 24 Hours Professional customer Service), Your Private Aquarium HousekeeperNote: Please choose the right model magnetic brush according to your fish tank thickness Small fish tanks can choose the size S brush, large fish tanks need M or LPackage Includes: 2 x DaToo Aquarium Magnetic cleanerSelect DaToo Products, Let us accompany your fish for lifeJUST DO IT, LetAt go