Rotary tumble mixer, measures 80″ diameter X 78″ straight side, plus 36″ long cone ends on each side. Mixer includes internal spirals. Drum rotates on base with rubber tires and previously used to mix at concrete batch plant. Drum includes 36″ diameter infeed and 24″ diameter discharge. Mixer is fed by 58″ diameter conical feed hopper with 12″ x 12″ discharge.