Built from carbon steel for durability: quality carbon steel construction provides good hardness and strength so the pans resist warping and last through repeated use. Reliable nonstick surface: Each removable base is coated with a durable nonstick layer that resists flaking, reduces grease absorption, and speeds up cleanup. Easyrelease removable buckle and bottom: The stainless steel buckle expands and loosens smoothly so you can separate the ring from the base without damaging fragile cakes. Removable bottoms allow faster release and make slicing and serving easier while minimizing bottom leakage during baking. Four sizes for versatile baking: Set includes 4 inch, 7 inch, 9 inch, and 10 inch springform pans to cover small individual desserts through fullsize cakes and tarts. Even heating and ovensafe to 450°F: Carbon steel construction helps the pans heat quickly and distribute temperature evenly in the oven or on the stove. Safe for use up to 450°F (232°C). Simple care instructions: Rinse and wash after use and air dry in a ventilated place before storing. The nonstick coating eases cleaning but avoid abrasive tools to preserve the finish. Use scenarios: Cheesecakes and mousse cakes: Bake, chill, and release delicate cheesecakes cleanly using the removable bottom and secure buckle. Layered cakes and tarts: Produce uniform layers and remove the ring for professionallooking edges on layered cakes, fruit tarts, and quiches. Individual desserts and test bakes: Use the 4 inch pan for small portions or recipe testing, and the larger pans for familysized desserts. What makes this set practical: Multiple sizes cover a wide range of recipes. Sturdy carbon steel and a longlasting nonstick coating reduce breakage and cleanup time. Removable bottom and stainless steel buckle provide reliable release and less batter leakage during baking. Specifications: Material: Carbon steel with nonstick coating Buckle: Stainless steel removable buckle Sizes: 4', 7', 9', 10' springform pans Ovensafe temperature: Up to 450°F (232°C) Note: Wash after each use and dry in a ventilated area to maintain performance and nonstick longevity.