"Product Size: 37*25mm Colour: Blue Material: Plastic Magnet Package Contents: 1 x Aquarium Suction Brush 1.High Quality Materials: Made of high quality ABS material, it is one-piece with good sealing and can prevent water from entering the brush body. It is non-toxic, environmentally friendly, durable and has a long service life. lifespan. 2. Strong magnetism: Each aquarium brush has a magnet, strong magnetic attraction, better absorption capacity, and makes the magnetic force more permanent. 3.Easy to use: the inner brush heads and outer are firmly connected to each other, just need to move the outer, and the cleaning effect on both sides of the fish tank is better. 4.Convenient and practical: The design is simple, compact and portable, and more convenient to use. clean the algae in the fish tank without worrying about getting your hands dirty. 5.Humanization Design: Comfortable non-slip design, easy to hold and operate, the pressure is more balanced and reasonable, it can clean the dirty residue and protect the glass." Note: The data is all manual measurement, please please allow 1-3cm error; due to the light and display difference, there would be some color difference, please refer to the actual object received.