Calphalon T10 Tri-Ply Copper 10 Piece Set, Brown Copper Exterior And Aluminum Inner Core Combine For Superior Conductivity And Precise Cooking Control. Non-Reactive Stainless Steel Interior Offers The Reflective Cooking Surface Many Chefs Prefer. ItS Brushed To Maintain Its Like New Appearance Through Years Of Daily Use. Brushed Copper Exterior Complements Both Traditional And Contemporary Decor Precision Fit Stainless Steel Covers Seal In Heat And Moisture. Recommended Stove Tops: Gas, Electric, Halogen, Or Glass Flared Rims Are More Durable; Make Pouring Neat And Easy.