Product description Size: suction cup diameter 28mm Cable tie length 10cm Color: transparent Material: PVC Package content: 20pcs suction cup 20pcs cable tie 1.Transparent Suction Cup: The aquarium suction cups with adjustable zip ties for small aquariums or positioning small plants, fish and shrimp nest, thermometer and so on. 2.Premium Quality: Our fish tank suction cups are made of PVC plastic, clear, durable and hold wellno-defomation, won't be hard. 3.Easy to Use: Just pass the tie through the hole to binding items you want. The suction cup planter will not scratch the surface of the fish tank. 3.How to use The hook allows you to hang some small things like bath towels on the wall. Remove the hook and change a cable tie. You can place small plants, fish and shrimp nests, thermometers, etc. in a small aquarium. 4.Package Includes: 20 pieces suction cup clip with 20 zip ties.They are separate products. The aquarium suction cup can also be used with metal hooks or other ropes.