The Prime Bakers and Moulders Combo of 4 Inch and 5 Inch Aluminium Square Cake Baking Mould/Pan Tray, 2.25 Inch Deep, is a set of two essential baking pans designed for creating square-shaped cakes of varying sizes. This combo set includes two individual square baking pans. One pan measures 4 inches (approximately 10 cm) on each side, and the other measures 5 inches (approximately 12.7 cm) on each side. Both pans have a consistent depth of 2.25 inches (approximately 5.7 cm), which is a versatile height for various cake types. Both moulds are crafted from food-grade Aluminium. Aluminium is a highly favoured material for baking pans due to its exceptional thermal conductivity. This property ensures even heat distribution throughout the entire pan, preventing hot spots and promoting uniform baking and browning of your cakes. It's also lightweight and durable.