Vintage RAINBOW Nutri-Stahl Nutri-Thermic 6-7 Qt Stock Pot with Lid – Stainless Steel. This is a preowned vintage Nutri-Stahl Nutri-Thermic stock pot, approximately 6 to 7 quarts in size. Made of durable stainless steel. Includes the original lid (not heavy). Please note: The thermostat will need to be replaced. Overall in good preowned condition with normal signs of use.