This 3" biscuit cutter is made of tinned steel. Biscuit cutter is one inch tall with a safety lip on top edge. Perfect size for breakfast biscuits and gravy! Small enough for health-conscious adults and kids, but those with bigger appetites will happily gobble two or three biscuits this size! Also works well for cutting round cookies and play-dough. Please be sure to dry this biscuit cutter after washing it because if left wet it will rust.