Need more storage space plus refueling capabilities? A toolbox and refueling tank combo solves your problem! Manually fill your vehicle’s main fuel tank as well as filling other vehicles or equipment, including ATVs, boats, lawn mowers, and generators! Transfer Flow’s refueling tanks come with a U.S. Department of Transportation (DOT) Special Permit Number, SP-11911, allowing you to LEGALLY carry gas, diesel, methanol, ethanol, kerosene and aviation fuel. Transfer Flow’s toolbox and refueling tank combos are available in 40, 70 and 100 gallon units, and come complete with all parts needed for you to start refueling!