Feature: 1. With magnets, the magnetic force is more durable, the adsorption is firm, does not fall, and it is easy to clean the inner wall of the fish tank. 2. The algae removal brush for aquarium has a powerful combination of the inner and outer brush, and the double‑sided cleaning effect is better. 3. The mini aquarium magnetic brush uses high‑quality ABS material, integrally formed design, durable to use and wear‑resistant. 4. Simple design, small and portable, easy to use and operate, which can provide a good environment for fish or other aquatic pets. 5. Good airtightness and can prevent water from entering the brush body. It is suitable for cleaning small fish tanks with a thickness of less than 6mm. Specification: Item Type: Aquarium Brush Material: ABS+Magnet Color: Blue Weight: Approx. 36g / 1.3oz Product Extension Size: Approx. 37x25mm / 1.5x1.0in Applicable Fish Tank Thickness: Small fish tanks within 6mm / 0.2in Purpose: Suitable for mini fish tanks cleaning. Package List: 1 x Aquarium Brush Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.