Description Do you need a durable fish tank CO2 refiner device? If so, take a quick look at this fish tank refining device. Made of high grade materials, durable and long-lasting. Unique design and exquisite craftsmanship ensure its popularity and practicality. Features -Color:Transparent -Material:Glass -Size:8.00X4.00X2.80cm/3.14X1.57X1.10in -The material is sturdy and durable. It can be used for a long time and has better dissolved oxygen effect.Easy to clean, durable, environmentally safe material. -Wide uses, great for home fish tank, office fish tank, aquarium and hydroponics nutrient tanks. -You can send it as a gift for your friends who raise fish, give them a little surprise. -Made of good material, safe and durable, not easy to break, long serving life. -A practical and useful tool for your fish tank, help to create more oxygen. Package list: 1 x Refiner 1 x non-return valve 1 x suction cup 1 x U-shape tube