I have multiple fuels needed for machines and always worry about putting the wrong stuff in something. Markers dont stay on the can good. I made these as a last ditch label so you can see what you are about to put in the machine. Two Stroke, Four Stroke and Diesel models and a blank one that you can use tinkercad to hollow out your own letters. Fits most of the race type fuel cans. You can color code them for specific fuel types too or to match the machine it goes in.