Description: Material: Cotton + Plastic + Activated Carbon Size: 13*12cm / 5.07"*4.68" Color: Blue Feature: 1. Fresh replacement filter cartridge, effectively removes impurities and pollutants from the aquarium. 2. Suitable for various brands and models of fish tank filters, convenient and quick. 3. High-quality original accessories ensure the aquarium water is clear and the fish are healthy. 4. Long lifespan, not easily clogged, saving replacement costs and time. 5. Professional team provides after-sales service, ensuring a guaranteed user experience throughout. Note: 1. Manual measurement may have an error of 1-2cm. Please understand, thank you. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. Package includes: 1* Aquarium filter replacement part