Specifications: Powerful suction cup design, it is not easy to loosen in any position, the adsorption is stable and reliable, and the environmentally friendly silica gel is not aging and corrosion. There is a high-quality wear-resistant shaft core, acid and alkali-resistance. It is made of high-quality ABS material which is durable, and its fluid mechanics design is to achieve a-state of ultra-quiet and no sound. Item Name: Aquarium Oxygen Pump Material: ABS(Appearance), Stainless Steel Shaft Core Plug: CN Plug Power: A-8W, B-15W, C-20W, D-25W, E-35W, F-45W Flow Rate: A-600L/H, B-700L/H, C-1000L/H, D-1500L/H, E-2000L/H, F-2800L/H Features: Multi-function, Save Energy, Submersible, Aeration Device Power Cord Length: F: 130cm/0.51", A/B/C/D/E: 1.1m/0.43" (Approx.) Bellows Length: A/B: 0.6m/0.24", C/D/E/F: 0.8m/0.31" (Approx.) Head of Delivery: A-0.5m/0.2", B-0.7m/0.28", C-1m/0.39", D-1.2m/0.47", E-1.5m/0.59", F-1.8m/0.71" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bellows 1 x White Intake Pipe 1 x Wire 1 x Water Pump 1 x Water Inlet Basket