Truly the ultimate, fully-professional springform pans, these incredible pans from Fat Daddio's are like nothing we've ever seen. They're made of heavy-gauge aluminum, the essential material to provide the quick, uniform heat conduction needed for cakes. The heavy guage metal guards agains warping, keeping the uniquely-designed base flat to prevent leaking. A rugged, stainless-steel clamp ensures the ring closes tight. If you want the ultimate pan for baking your cheesecakes, these are the ones.