High flow, stable property and high efficiency. Compact design, convenient to carry and storage. Easy to install and simple to use. No batteries needed. Fit all drill chucks, you can get a pump with a electric drill. perfect for transferring light liquids, such as fresh water, sea water, oil, dilute organic solvents, insecticides and liquid fertiliser. Shank Diameter: 1/4inch Inlet/Outlet Inner Diameter: 16mm Inlet/Outlet Outer Diameter: 19mm Flow Rate: 20-30L/min (120W-350W 1500-2500RPM) 30-40L/min (350W-650W 2500-3500RPM) Colour: black Material: plastic + metal Size: 126x63mm Package Contents: 1 * Water Pump 2 * Hose Clamps 2 * Screws 2 * Shelves Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.