Review on High-Quality Screw Caps for Replacement Gas Can: Perfect Fit for Gott, Rubbermaid, Briggs & Stratton, Kolpin, and Rotopax Fuel Containers by David Batte

They fit my Rubbermaid and Gott cans from the past. They correspond to the original caps with the letter "T", in particular the thread has the correct pitch AND size. I hope they prove more durable than the originals which tended to split. You'll also need to tighten them fairly tightly to ensure the gas doesn't escape if the can tips over. This may be because the rubber seal is not flexible enough. My final conclusion at this point is that they are overpriced. FWIW, another set of cheap Chinese knockoffs I tried had the threads at the right pitch but too fine. They didn't screw or install the lid properly - the extra thick washer they included didn't help.