Material: Heavy duty high carbon steel + Premium coatingToxic free and Non-stick: Non-stick coating without harsh chemicals or hazardous substances, Safer and healthier.Diameter of 4 round cake pans: 4.7inch (12cm), 5.5inch (14cm), 6.3inch (16cm), 7inch (18cm). Height: 3.93inch (10cm)Easily Cleaning: Springform cake pan set a leak-proof seal, the snap-open side buckles and removable bottom help to release a more perfect shape.