[High-density soft brush] The fabric of the magnetic fish tank brush is soft, not easy to tear, and wear-resistant. It can be used to scrape off algae, moss, dirt, etc., and is safe for the fish tank. It cleans the fish tank comprehensively without residue.[Easy to use] The shell is made of high-quality plastic material, which is comfortable to hold, seamless and has anti-skid and waterproof effect. When you move the external magnet, the internal magnet will follow the movement, making it easier for you to clean it completely.[Powerful magnetic force] This mini magnetic fish tank brush is light and beautiful, has strong magnetic attraction, strong absorption, durable and practical, suitable for 3-6MM / 0.12-0.24 inch glass, very suitable for square or round tanks.[Comprehensive cleaning] Using a magnetic brush, you can clean the inside and outside of the algae water tank without putting your arms in the water, saving you time and making it easier for you to clean the glass more effectively.[Package includes] You will get 3 mini magnetic fish tank brushes, 1 blue, 1 white, and 1 black. The quantity is sufficient, enough for you to use for a long time.