Fuel dump jugs. Fills tank FAST! Great for automotive endurance and desert racing. We used them a handful of times for endurance road racing. Red jugs hold 11 gallons, made by Fuel Safe. The white jugs hold 14 gallons. Both come with reducers so you can use them with a normal fuel tank. Retail was about $300 each but I'm asking $100 each FIRM. I have two red ones and two white ones. Send me a message if you need them.