【Easy to Use Fuel Transfer Pump】Built-in DC valve for faster liquid suction; only two to three presses are needed to pump the liquid. The built-in check valve effectively prevents liquid backflow. 【Easy to Use Fuel Transfer Pump】Built-in DC valve for faster liquid suction; only two to three presses are needed to pump the liquid. The built-in check valve effectively prevents liquid backflow. 【High-Quality Hand Pump】This portable manual fuel transfer pump is made of high-quality PVC, making it sturdy and durable. Hose length: 4 meters. Inner diameter: 14 mm. There is an arrow on the surface of the hand siphon pump. Press the arrow on the front of the manual fuel pump. 【Portable Fuel Pump】This lightweight and portable liquid transfer pump is perfect for safely transferring fuel, oil, gasoline, diesel, water, or non-corrosive liquids. It can be used on boats, vehicles, lawnmowers, tractors, motorcycles, waterbeds, aquariums, and other liquid siphons. 【Note】The delivery includes only one