Jeebel Camp G007 Butane Fuel Canister Refill Adapter

Does exactly what it should. Gave me a nice secure connection between the two canisters and allowed me to somewhat safely combine two partially empty canisters into one, or to refill the smaller (more expensive per quantity) canisters from the much larger cheaper ones. I little more expensive than the exact same ones imported from China, but I didn't want to have to wait a month.

Stop tossing half-empty isobutane cans away. Got this for the adapter and it works great. Careful not to overfill. Freeze the adapter with the can to be filled and it'll overfill easy. Or use on the trail at equal temperatures and it'll fill nicely. Rock-solid build. So rock-solid one wonders if a little more weight might be shaved off the design? Weighs one-ounce now. Might a few fewer grams be possible?