DescriptionThis item is a glass tube for fish tank. The ceramic refinement piece has atomic pores on its surface, which can produce fine bubbles that rise slowly and ensure efficient diffusion of carbon dioxide in the aquarium. With the suction cup design, it is easy to install and operate and can fix on the aquarium firmly.Feature- Color: As shown- Size: 10 x 8 x 4 cm.- Material: Glass- High bending resistance.- Crystal clear, nice and beautiful.- Includs glass CO2 diffuser and suction cup.- U shape designed, more convenient than normal tube.Package Including1 x Glass CO2 Diffuser1 x Suction Cup