Description: Multifunctional: This multi function fish feeder rings set is designed for aquarium fish tanks, effectively controlling the of fish food, preventing food from floating or sinking to the bottom, and keeping the water clean.Feature: The feeder rings set features a rings design that can be adsorbed anywhere in the fish tank, making it convenient for fish to eat and for observing the fish's eating situation.Durable: The feeder rings set is made of high quality materials, durable and easy to clean, and can be used for a long time.Wide Application: This feeder rings set is suitable for various types of fish, whether freshwater fish or saltwater fish.Portable: Lightweight, easy and convenient to carry. Size Chart: Feeding circle: 9cmx9cm/3.54inx3.54in, suction cup diameter: 2.2cm/0.87inFeeding cup: 6.3cmx6.3cmx6.3cm/2.48inx2.48inmeasuring cup: 7.3cmx8.3cmx8cm/2.87inx3.27inx3.15in; 230ml Package Includes: 1x Feeding Rings1x Feeding Cup1x Measuring Cup Note: Please allow slightly errors due to manual measurement and different monitors.