Description: Function: With oil suction pump, you can make a small oil change, transfer petrol into a canister or refill the tank Hose: The Optional hose is flexible and clear, you can easily see the water flow. Easily to use: Just insert oil inlet pipe into the bottom of the fuel tank, and insert oil discharge pipe into the prepared fuel tank, built in dual stop valve on both sides of the large rubber ball, easy to extract,press the rubber ball 3-5 times and the liquid automatically flows out. Features: fast speed, easily to use, easily to carry. Widely used: Perfect for petrol petrol water and other common liquids, Also be water changer for aquarium, suitable for trucks, cars, motorcycles and other models. Specification: Material: Rubber Air bag length: 25cm/9.84inch Tube diameter: 1.8cm/0.71inch Tube wall thickness: 0.2cm/0.08inch Notice: 1. There can be no anti theft oil filter in the fuel tank 2. When pumping oil, the pipe should be inserted into the fuel tank 3. The height of the ball must be lower than the height of the fuel tank Package Includes: 1 Piece Suction ball 1 Piece Hose (Optional Length) Note: Please allow slightly errors due to manual measurement and different monitors.