Product DescriptionSize: 6.7*7cm Color: white, greenmaterial: plastic Package Content: 4pcs Feed Hopper 1.materialMade of plastic, eco-friendly, safe. 2.installation Comes with a suction cup, floating freely or attached to the side of the aquarium with the suction upwards. 3.applicationThe floating funnel for red worms can solve the problem of eating small food in the aquarium for fish. 4.protect the environment Protects live food spilling into the aquarium tank. 5. has a removable powerful electromagnetic suction cup, which is not easy to fall off.