The suction cups are suitable for pipes with a diameter of 22mm to 28mm. High-quality materials will not harm fish and other creatures in the water. Strong adsorption, just stick it on on a clean glass surface The aquarium suction cup has a strong suction force, it is not easy to fall off, and it is very convenient to install and remove. The aquarium suction cup holder can be used not only for rods heating, but also for LED lights, light pipes and water pipes to keep the aquarium clean and beautiful. It is recommended to replace and clean the suction cup regularly Color: Black Packing: 25 clamps suction cup for aquarium