Feature: 1. Put the food in the fish feeding ring, the fish will eat by themselves, improve the feeding efficiency, and reduce the fish food waste. 2. Equipped with a suction cup (removable, not easy to fall off), can be adsorbed on the aquarium. It can float freely or be adsorbed on the wall of the aquarium with a suction cup. 3. Carefully selected materials, environmentally friendly plastics, non‑toxic and tasteless, no pollution to water, harmless to all aquatic pets. 4. Suitable for all flakes, granules, various shapes, with floating fish food, suitable for fish, turtles, goldfish, snappers, catfish, β aquatic pets, etc. 5. Feeding rings keep food in place when the fish eat them, reducing the amount of food that rots things and can really mess up your water quality. Specification: Item Type: Aquarium Feeding Ring Material: Plastic Weight: Approx. 25g/0.9oz Outer Diameter: Approx. 10 cm/3.9in Inside Diameter: Approx. 8 cm/3.1in Rod Length: Approx. 3.5cm/1.4in Thickness: Approx. 3.5cm/1.4in(with 0.1-0.3cm error). Package List: 1 x Feeding Circle