【Material】These aquarium suction cups with hook are made of high quality PVC plastic, quite durable and safe. 【Firm adsorption】Aquarium suction cups are made of silicone rubber and plastic soft, flexible and durable, with strong adsorption, perfect for aquariums and glass surfaces. 【Easy to stick and remove】Suction cup aquarium clip keep the surface clean, dry and smooth, stick- easily; To remove the cup, simply pull the release tab to stop the suction. 【Application】Use transparent aquarium suction cups, you can hang small items on the wall, such as a bath towel. Remove the hook and change a zip tie, you can place small plants, fish and shrimp nests, thermometer, etc. in small aquariums. 【Wide Applications】These aquarium suction cups can attach the air line to the back or bottom of the aquarium, providing a more tidy display aquarium. The suction tube holder is suitable for both saltwater and freshwater aquariums, fish tank and glass surface.