Used Paul O. Abbe Pebble Mill, Model #1, 304 Stainless Steel Exterior, Alumina Ceramic Lined. 68" Diameter x 56" straight side. 117 Cubic feet total capacity, 29.25 working. Internal rated 14.7 PSI/Full Vacuum at 80 Degrees F. Carbon steel jacket rated 14.7 PSI at 80 Degrees F. Side by side 18" diameter charge ports with covers. Mounted on stainless steel legs with rotary unions. Main drive 40 HP, brake drive 15 HP. 3-20 RPM drum speed. Includes a control panel.