High Density Soft BrushThe fabric of the aquarium magnetic brush is soft, not easy to tear, and wear-resistant. Can be used to scrape off algae, moss, dirt, etc., safe for aquariums. It cleans the aquarium completely, leaving no residue. [EASY TO USE] The case is made of high quality plastic material, comfortable to hold, seamless, non-slip and waterproof. When you move the outer magnet, the inner magnet will follow the movement, which will make it easier for you to clean thoroughly. Strong Magnetic ForceThis mini aquarium magnetic brush is light and beautiful, with strong magnetic attraction, strong suction, durable and practical, suitable for 3-6MM/0.12-0.24 inch glass, ideal for square or round sinks. [Comprehensive Cleaning] With the magnetic brush, you can clean the inside and outside of the algae tank without putting your arm into the water, saving you time and making it easier for you to clean the glass. Package IncludedYou will get 3 mini magnetic aquarium brushes, 1 blue, 1 white and 1 black. The portion is enough to last you a long time.