Calphalon Classic Bakeware Cookie and Cooling Rack combo Our professional quality cookie sheets offer even heating across the entire surface for uniform baking of your entire batch; Two cooling racks accompany the cookie sheets to help you bake off batch after batch quickly and efficiently Aluminized steel construction resists rusting; Classic design for expert results; Professional grade construction ensures a lifetime of performance; Reinforced nonstick is Calphalon's most durable nonstick ever Dishwasher safe for easy clean-up Oven Safe 450-Degree F Utensils: Nylon or Wood