High-quality materials: The pump ball is made of high-quality rubber and corrosion-resistant metal. The large ball-shaped structure can provide strong suction, not easy to tear, and long impact time. Quick drain or fill: The check valve design ensures that the flow of liquid is assured by pressing after have connected and placed on the pipe. The filling container should be low in height and can be quickly emptied or refueled. For a variety of liquids: The delivery pumps are suitable for fuel, engine oil, gasoline, diesel and oils for gears, and not suitable for corrosive liquids or potable water. Simple and effective tool: The fuel pump is suitable for most engines, most commonly used for outboard marine engines or inboard. After replacing the fuel filter, fuel is fed into the fuel pump. What You Get: 2pcs x Fuel Line Pump. If you have any questions about the products, you can always contact us and we will provide you with the best customer service. Material: aluminum alloy and rubber Color: black Outer diameter: 8mm / 0.3 inch Length: about 15cm / 5.9 inch Sphere diameter: 4.5cm / 1, 8 inch Weight (pcs): 78g / 2.8oz