Betty Boyns - Kitchenalia Design. This set includes three round cake tins in the Black Toast design from Emma Bridgewater. The tins are made from steel and feature a wipe-clean surface. The largest tin has a diameter of 24.5cm and a height of 15cm, the middle tin has a diameter of 22cm and a height of 12cm, and the smallest tin has a diameter of 19.5cm and a height of 9.5cm.