Symmetry Bakeware Muffin Pan: Carbon steel cake pan Features a warp resistant rolled rim with wide handles PFOA-free non-stick surface Time and energy saving Solution driven design Without grease pan Holds up to 12 cup muffins Oven safe up to 450 degrees Fahrenheit Hassle-free lifetime guarantee Measurements: 12.5" W x 1.25" H " material="Carbon steel" origin="China"