Lightweight & Compact SizeThis brush is cute and lightweight, the size is 1.46*1.46*0.98in. The design conforms to the curve of the hand, you can hold glass cleaning comfortably.Its small size can be placed in the corner after use which is not affect fish watching activities. Easy to UseYou don't need to wet your hands to clean your tank ,you just move the external magnet while the internal magnetic brush will follow to clean with ease which will save your time.Small and arched fish tanks are also suitable, it can bypass the square corners, no corner is missed. Efficient CleanThe inner abrasive velcro can effectively clean tank and will not scratch glass. Be sure that nothing gets stuck to the magnet substrate while scraping the tank. Non-Slip DesignErgonomic concave design is suitable for palm gripping to make the brush move flexibly. Strong magnetism makes the 2 magnet pieces attached to the wall tightly without falling off. Powerful Magnetic ForceThis mini magnetic fish tank brush is light and beautiful, has strong magnetic attraction, durable and practical, suitable for 3-6MM / 0.12-0.24 inch glass, very suitable for square or round tanks. Colour Name:Blue The small magnetic algae brush is powerful enough to help clean glass tank easily. The inside velcro material is ideal for harder algae while the outside soft felt pad prevents the glass from scratching. Features: 1. This fish mini scrapers super magnetic brush is lightweight and cute, and is very convenient and flexible to use.You don't need to empty the tank, it won't disturb the fish, and the small design makes it easy to clean the corners. 2. Simply takes a few minutes to effectively clean tank from all sides of the aquarium. 3. The magnetic force is strong enough and when they get close it will reattach together,however,it's only suitable for 3-5mm fish tank, and not suitable for acrylic fish tank .It can't float too. 4. When not in use, it can be directly adhered to the glass without additional storage and will not affect viewing. Specifications: -Color: Blue -Size: 3.7*3.7*2.5cm/1.46*1.46*0.98 in -Suitable for glass thickness: 3-6mm Warm Note: 1. Not suitable for acrylic and plastic fish tanks. 2. This product has strong magnetic force, so it is not suitable for people under 10 years old to use. 3. Please make sure there is no sand between the brush and the glass to avoid scratching the fish tank. Package Include: 1 * Mini magnet brush