7/11 quart round cooker/warmer is constructed of stainless steel with a interior liner made of out of 20 gauge 18/8 stainless steel . This item can be used as a slow cooker or food warmer. It has a manual temperature control knob that has a range of 0ºF-212ºF degrees. The included adapter ring which easily converts the item from 11 qt to 7 qt with the use of a smaller inset. Insets not included. Overall dimensions are 12.5"H x 10.25" Diameter. 120V, 1200W, 10 Amps. NEMA 5-15 plug. UL and UL EPH.