Searching of a fish tank oxygen difffuser device? Our fish tank device will be the for you. Made of stainless steel material, durable enough for your long-term use. Practical and portable design, ensures its popularity. Fish tank bubble to increase oxygen for the fish tank. Features -Color:Silver -Material:Stainless steel -Size:3.00X3.00X1.00cm/1.18X1.18X0.39in -Hole diameter: 4mm - Widely used for oxygenation in various aquariums, fish tanks. Suitable for aquariums, especially aquatic , tropical fish and other ornamental and aquaculture ponds. - Compatible with a wide range of aquarium, making it a versatile accessory for fish tank enthusiasts. - Good for maintaining the health of your pet , make their daily life more happy. - With the simple structure, fish tank device is very easy and simple to use, save your effort. - The more air goes into the water, the fish pets can happy life in the aquarium tank. Package list: 1 tank air diffuser