Function: the grooves on the surface are non-slip for holding and using, convenient for assembly and disassembly, frequently used as a hand pump in boats for outboard motor fuel supply . Premium Material: The fuel oil pump is made of quality rubber and metal which is corrosion resistant, oil resistant and durable. This is a rubber product, please do not store this item under direct lightsunlight or other harsh environments. Easy to use: the arrow on the rubber ball indicates the direction of the oil. The rubber ball has a built-in one-way oil inlet valve and a one-way oil outlet valve, which can prevent backflow.It can be extracted directly in 3-5 seconds, which is simple and convenient. Widely used: The siphon pump is very suitable for transporting gasoline, oil, water and other common liquids. It can be used to change the oil of automobiles, lawn mowers, hedge trimmers and other machines,and can also be used as a water changer for home aquariums. Tips: 1.Not suitable for sea water or corrosive liquids. 2. The liquid you are trying to get rid of must be higher than the bucket you are dumping in. 3.Please keep the hose inside the container and notjust put it on the surface. 4. Only for vehicles without gasoline protection network Features: Used for transporting gasoline, diesel, oil, water, etc. It can be used to fill the fuel system of automobiles, boats, motorcycles, etc. There are built-in DC valves on both sides of the rubber ball for direct extraction, simple and convenient. Widened rubber ball, stronger suction, concave-convex pattern design, more non-slip. Specifications: Size: 12mm Material: rubber + aluminum alloy Cracking pressure: 0.2 bar Operating pressure range: 0.2-6 bar Operating temperature range: -30 -130 Install the oil pump according to the inner diameter of the oil pipe. 2. Press the rubber part by hand to suck the oil from the pipe. monitors and lighting effects, the actual color of this item may be slightly different from the color shown in the image.