[Tramontina 12 Piece Gourmet Tri-Ply Base Cookware Set, Stainless Steel] The Tramontina 12-Piece Gourmet Tri-Ply Base Cookware Set assortment was carefully selected to accomplish a variety of daily cooking tasks in the kitchen. It is made of premium 18 & 10 stainless steel & features an impact-bonded, tri-ply base construction (consisting of stainless steel, an aluminum core & a magnetic stainless steel) to help distribute heat quickly & evenly when cooking. This heavy-gauge, stainless steel set is strong & durable with a mirror polished exterior that provides an attractive display in any kitchen. The tempered glass lids allow for easy monitoring of food during the cooking process, while the stainless steel handles are riveted for added support. This cookware is compatible with induction, gas, electric & ceramic glass cooktops, is oven-safe up to 350 degrees Fahrenheit (176 degrees Celsius) & is dishwasher safe for easy cleaning. The set is part of the Tramotina Gourmet Collection of premium products engineered & manufactured with the finest design, materials & workmanship, outperforms similar products within the market & delivers the best quality & value to the cooking professional & enthusiast alike. Made in Brazil, and offered under a manufacturerâ€s Lifetime Warranty.