The Primax Single Drum Asphalt Mixer (also known as a Combined Drying and Mixing Unit) is a highly mobile, diesel-engine-driven unit used for road patchwork and small-scale paving. Available in 4 to Primax Single Drum Asphalt Mixer 10 ton-per-hour capacities, it efficiently dries and mixes asphalt in one self-contained, wheeled chassis.