RDEXP Plastic Aquarium Fish Tank Suction Cups Clips Holders for 7mm Sucker Pack of 50 Material:plastic,It can not be used in the high temperature exposure place, or it can be oxidized with good suction effect and it can be used for aquarium and other glass surface elastic holder clip and well clip air line easy to install and remove 50pcs in one package, Suitable for 5mm tube to use.