The product is a set of two new Aqueon replacement filter cartridges in size small, specifically designed for models A10 and A15. These cartridges are essential for maintaining the cleanliness and water quality in fish tanks or aquariums, ensuring a healthy environment for the fish. Made by the trusted brand Aqueon, these cartridges are a reliable and efficient solution for keeping the water in the aquarium crystal clear and safe for the fish to inhabit.