Item Type: Fish Feeding Ring_x000D_ Material: ABS_x000D_ Round Shape Fish Feeding Ring Diameter: Approx. 5.5cm/2.2in_x000D_ Quadrate Fish Feeding Ring Diameter: Approx. 8cm/3.1in 1Fixed Point Feeding, Keep Clean: Put the food into aquarium fish feeding ring, let the fish develop the habit of fixed point feeding. It is easy to clean up the residual feeder, reduce waste, maintain water quality and increase feeding fun. 2Unique Design: Aquarium floating food feeder circle is round and quadrate thickened design to meet various fish tanks and aquariums. 3Rotating Rod: Aquarium fish feeding ring is equipped with a rotating rod that repositions with the water level when the water level rises or falls. The fish feeding ring always floats on the water surface. 4Powerful Suction Cups: Aquarium floating food feeder circle is firmly attached to the fish tank wall by powerful suction cups and will not come off easily. 5Widely Used: Aquarium floating food feeder circle is suitable for all flakes, pellets, all shapes and floating fish food. 6Safe Material: Aquarium floating food feeder circle is made of premium ABS material, non polluting, guard fish health.2 x_x000D_ _x000D_ FishFeedingRingPlease allow for some errors in manual measurements.