4CARS premium line fuel canisters are equipped with a double channel pouring nozzle. which prevents the formation of a vacuum when pouring into the canister and thus the fuel flows out of the canister quickly and "without crushing". There is a special spout on the side of the canister. which makes it even more convenient to store and use. in addition, a transparent level bar. which makes it easy to monitor the amount of fuel in the canister.