Feature: 1. PREMIUM MATERIAL: Submersible aquarium pump is made of premium ABS shell, strong and durable, internal ceramic axes, freshwater seawater, safe fish farming, no danger of electric shock. 2. SUPERIOR PERFORMANCE: Submersible aquarium pump has large flow, high lift, strong power, low power flow without attenuation, quiet sound, about 35 dB underwater. 3. QUIET DESIGN: The aquarium filter water pump adopts a four corner cushioning base design to further enhance the quiet effect and reduce the noise of use. 4. UNIVERSAL TO USE: Submersible aquarium pump can be replaced with a variety of water pipe diameters, and different calibers meet most water pipe fittings. 5. ADJUSTABLE FLOW: Aquarium filter water pump adopts adjustable flow design, and the flow rate can be adjusted by rotating the button, which can be used for amphibious use, saving energy and power. 6. HIGH EFFICIENCY: Aquarium water pump adopts strong pumping, the minimum water level of the fish tank can be pumped about 5MM low water level, better pumping the residue at the bottom of the fish tank, to ensure cleaner water quality. Specification: Item Type: Submersible Aquarium Pump Material: ABS Usage: Fish Tank Fountain Circulating Filter Pump Interface Size: Outer Diameter: Approx. 16mm/0.63in Outer Diameter: Approx. 20mm/0.79in Outer Diameter: Approx. 22mm/0.87in Outer Diameter: Approx. 25mm/0.98in . Package List: 1 x Water Pump5 x Connector2 x Gasket4 x Suction Cup Note: Manual measurement please allow some error.