The are aluminum pan every kitchen needs. Seamless and straight sided for perfect tiers every time. Anodized for safety and performance, they will never chip, rust, flake or peel into your food. Easy release and clean up. Hand wash recommended. Heats faster and cools quicker. Temperature rated to 550° F. In Cake Supplies On Sale they are available in 2, 3 and 4 depths. Available through 18 diameter.