Pre mixing 2-stroke fuel has never been cleaner, easier, and more accurate. The Accu-mix fuel container is a standards approved red plastic unit that is divided into two compartments. Fill compartment "A" with the recommended amount of fuel, and compartment "B" with your 2-stroke oil. Screw both caps back on and shake to mix. Eight common fuel/oil ratios are embossed right on the side for quick reference. Container is calibrated to 6 total liters.