If you’ve ever found yourself with more than one sort-of-full fuel canister, then this little gadget is for you. The FlipFuel is a quick and easy way to turn 2 half-empty canisters into 1 full canister. With fuel canister threads on both sides and a valve that controls much like your canister stove does, the FlipFuel lets you transfer fuel from 1 canister to another. So, whether you want to fill an empty small canister from a large canister for an overnighter, or combine any partial canisters into a couple full ones, the FlipFuel has you covered.