Too often I have transported Scribner jugs with the filler hose still attached. I've always hated doing that, but could never find separate lids to use so I didn't have to remove the filler hose. Besides, after a while I usually loose the OEM plug from the original lid. Now, I can have safe transportation of my fuels, and still keeps my hose on their lids.
SF Bay Area
Super caps fit real good