Attritor mill, intermittent type attritor, manufactured by Union Process, size 1S, type B, complete with stainless steel, jacketed tank. Tank measures 5" diameter x 6" deep, includes stainless steel agitator with paddles. Complete with 3/4 HP, DC drive thru gearbox with unltracon "screw drive" vari-speed controls. Previously used to grind ceramic powders. Appears to be in very good condition. Includes spare agitator.