[Whole roll weight]: about 1000g【Product name】: Special oxygen pipe for fish tank oxygenation pump / special hose for air pump【Product Specifications】: 80m,inner diameter 4mm, outer diameter 6mm[Product Features]: The high-quality outlet tube used for oxygen delivery by the oxygen flushing pump is translucent and milky white. It is different from the general trachea on the market. Durable, reasonable and innovative design.【How to use】: After connecting with the air stone, connect it to the air pump, so that the bubbles can emerge evenly, increase the contact area with the water, and increase the dissolved oxygen in the aquarium.