This aquarium air stones is for creating a lively and healthy environment for your fish. The long, sand-textured design ensures even air distribution, while the fine bubbles improve water quality and oxygen Easy to install and maintain, it is an ideal accessory for any fish tank enthusiast. Features -Color:Green -Material:Sandstone, abs -Size:4.00X1.50X0.50cm/1.57X0.59X0.20in -Compact and effective: these small air stones are highly effective in oxygenating your aquarium, ensuring your fish have a healthy and active environment -Durable quality: made from durable materials, these air stones are durable and safe for your fish, ensuring use -Steady bubbler stream: designed to produce a continuous stream of bubbles, these air stones enhance the oxygen levels in your fish tank -Easy to use installation: easy to install and maintain, these air stones offer a convenient solution for aquarium enthusiasts -Versatile pack: with a set included, these air stones are for replacements or use in multiple tanks, ensuring you always have a spare Package list: 10 x aquarium air stones