Very good for standard fuel tanks. Easy to twist, will not flow or drip when pouring. The transparent hose allows you to see the fuel, making refueling safer. There is a mesh at the base of the clear tubing where it attaches to a plastic thread. This screen prevents dirt from entering your vehicle's fuel tank. I want most of my fuel tanks to stay leak free so I just ordered one of these for the fuel jug. It worked well, no running, no dripping and no bugs and if you're using flammable fuelβ¦