One used Patterson-Kelley Blend Master Lab Blender. Maximum density rating 140 pounds a cubic foot. Unit consists of (1) 316 Stainless steel 16 quart twin shell blender with a provision for a bar, (1) 316 Stainless steel 4 quart twin shell blender with a provision for a bar, (1) 316 stainless steel 1 quart yoke shell. Includes controls for bar, and shells, and a Plexiglas hinged guard. Serial# BC62488.