Feature: 1. QUIET OPERATION: Fish tank oxygen pump uses ultra quiet operation, with super large air volume, and can even driveextra sand tables. 2. ADJUSTABLE AIR VOLUME: Aquarium air pump adopts multi level potentiometer knob adjustment, which can adjust the air volume at any time, which is easy to use. 3. HIGH GLOSS FINISH: Fish tank air pump features an updated liner technology with a high gloss finish for brilliant colors. 4. EASY TO USE: Aquarium oxygen pump with 8 air plates, 6 tee connectors and one air tube, it can be directly installed and connected for use. Large air plate has more air bubbles. 5. WIDELY USE: Aquarium oxygen pump not only can be used as a fish tank, aquarium oxygenation, but also suitable for fishing, fish ponds, seafood pools, etc. Specification: Item Type: Dual Outlet Aquarium Oxygen Pump Material: ABS Use: Fish Tank Large Volume Oxygen Pump, Sand Table Maximum Air Volume: > 10L, MINx2 Maximum Air Pressure: 30Kpa Rated Power: 5.5W Size: Approx. 22x13x12cm / 8.7x5.1x4.7in. Package List: 1 x Air Pump1 x Instruction Manual2 x Red Check Valve8 x Air Stone6 x Tee1 x Air Tube Note: All data are measured manually, and there are certain errors in the measurement results.