Sur La Table Platinum Professional Springform Pan 21085LC, 9" our commercial-quality springform pan meets the highest standards for performance and durability Each piece in this collection is constructed with the same features found in the best pans in the industry Thick aluminized steel offers superior heat transfer, resistance to corrosion and rust, and excellent durability Each pans thickness is based on years of performance data to deliver perfectly even heat distribution and a lifetime of use Steel wire is added to pan rims for extra strength and resistance to warping