GRANITESTONE Professional Series 13-Piece Hard Anodized Set, stronger than stainless steel cookware, hard-anodized aluminum exterior is dense, nonporous, and highly wear-resistant for the ultimate professional performance. The 2.8 mm. thick Anodized base is built to withstand the toughest cooking scenarios. The base is designed to absorb high heat and retain and disperse it evenly across the entire pan. No hot spots, No warping. So you your food cooks better and your cookware lasts longer. A Superior Base, For a Superior Cooking Experience. Induction base can be used on both gas or electric cooktops.