40 quart stock pot with cover.:The body is constructed of premium 18/8 stainless steel. This cookware has a tri-ply bottom consisting of two layers of stainless steel surrounding an aluminum core. The bottom layer is made of magnetic 18/0 stainless steel so the stock pot can be used on an induction cooker. The result is cookware that spreads heat rapidly and evenly providing higher efficiency and reduction of hot spots, which can cause food to burn or cook unevenly. With attractive brushed sides and a polished band across the top and bottom, each piece makes a striking impression. Dimensions. NSF certified.