[Recyclable Materials] - Aquarium bubbler High temperature sintered bubbles of high temperature sintering which, differ from stone the General the features of the bladder, and the material of the durable, cleaning can Return, replacement use for a long time. [FEIN Compressed Material] - Air diffuser aquarium air stone aquarium bubbler replacement for aquarium This aquarium air stone made with high quality materials. These air disc used FEIN compressed material, so the bubble small. Product Description Features: Made with high quality material . This air disc uses finely compressed material to make the bubble small. High temperature sintering bubble stone adopts high temperature sintering, different from the general features of bubble stone, and the durable material, can relapse cleaning, use for a long time. 2-stage connector head makes it easy to connect to the air tube with a smooth connector head. Features: The 2-stage connector head makes it easy to connect to the air tube with a smooth connector head. It can be used longer with good sufficiency if you clean often the surface of the dispersing tool. How to use: To immerse the dispersing tool in water for a short time. To connect it to the air pipe and adjust it horizontally. You need to buy another air pump, the tracheas are used together