Size: 40cm. Material: Made of good quality sponge, remove sticky algae and residue without damaging your aquarium. It can be reused for many times. Long handle: the aquarium cleaning sponge brush has a long handle that allows you to clean the aquarium very easily. Convenient: the Aquarium cleaning sponge brush is durable and reusable. Application: Good contact with the aquarium and easily reach hard-to-reach places, effectively and save your time.