Features: Enhances your aquatic pet's environment with this Betta Rings Enrichment Toy set feature a secure suction cup base, nitrifying filter ball for water purifications, and plastic construction. The 2.87in feeding rings stays firmly attaching to aquariums wall while filter ball promote beneficial growth, maintaining great water quality. Ideal for betta fish owners, aquatic turtles enthusiasts, and aquariums hobbyists seek interactive rings that stimulate natural behaviors and improve tanks hygiene. Perfectly positioned in freshing water tanks or terrariums, it creates designate feeding zones and cleaning area where pet explore while supporting ecosystem balance. Its white design adds aesthetic charm to underwater habitats while the modulars component enable effortlessly cleaning and long use. Specifications: Component: Plastic Color: White Size: As pictures shown. Package Includes: 2pcs Betta Exercise Rings 3pcs Filter Ball 2pcs Suction Cup note: 1.Please allow 1-2cm errors due to manual measurement, note that you donot mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.