This aquarium air bubbler is an essential accessory for any fish tank, providing a steady stream of fine bubbles that improve water circulation and oxygenation. The air stone pump is easy to set up and can be used in both small and large tanks. Its construction ensures performance, making it a valuable addition to your aquarium supplies. Features -Color:White -Material:Ceramic -Size:6.80X6.80X3.40cm/2.67X2.67X1.34in -High oxygen output: the aquarium bubble stone disc provides high oxygen output, ensuring your fish receive the necessary oxygen for a healthy life -Noisefree operation: utilizing advanced noise reduction techniques, this air stone operates without producing disruptive noise, maintaining a peaceful aquarium environment -Sturdy and reliable: the bubbler disc is sturdy and reliable, designed for longterm use -Quick installation: the aquarium air diffuser fine bubbles feature a simple design, making installation quick and easy for all users -Extensive compatibility: this air stone is suitable for a wide range of fish tanks, providing efficient oxygenation for various aquarium sizes Package list: 4 tank oxygen bubble stone