The fuel hose comes with snap-on connectors to allow quick attachment and removal of fuel tanks and outboard motor. Frequently used as a hand pump in boats for outboard motor fuel supply. Bulb designed to maintain flexibility and prevent collapse in hot and cold weather. There is an arrow marked on this fuel hose body indicating the fluid flow direction, which shows the oil flow direction. It brings fuel from the tank to the line and prevents fuel from flowing back into the tank by keeping it in the line. Installation steps: 1.Remove the female cap from the tube2.Press the female cap, align the male fuel tank cap and insert it3.Press the hand pump to refuel the outboard motor It is compounded to match today's alcohol-enriched gasoline blends. Greatly compatible with ethanol blended fuels, more reliable and convenient. The fuel hose is made of rubber, which has excellent sealing property, good leak resistance performance oil and air, flexible and can be bent at will, not easy to break, wear-resistant, corrosion-resistant.