Calphalon One Infused Anodized 12-Inch Flat-Bottom Wok 12-inch wok combines qualities of traditional metal and nonstick cooking surfaces Advanced release polymer penetrates pores of metal so that food sears and releases easily Stain resistant; compatible with gas, electric, ceramic stovetops; safe in oven and broiler Stainless-steel ergonomic handles stay cool; safe with metal, wood, and plastic utensils Safe with metal, wood, and plastic utensils; measures 12-by-3-5/8 inches; lifetime warranty