The AMFEC model 510 mixer/massager has a self-contained stainless steel hydraulic reservoir and dual shaft spiral tubular agitators with paddles on ends of agitator shafts. It also features a single large mechanical "toggle-lock" door end discharge. The mixer has approx. 300Lbs capacity. It is 3HP, 220V, 3 phase. Mixer is designed for vacuum operation but no vacuum pump included. FOB Lake City, PA.