These pans are made of long lasting, sturdy, durable steel metal and will have been tested and verified to fit in EasyBake Ultimate Oven only. PLEASE NOTE: These pans are small so that they fit in the small toy oven. ROUND PAN: Outside diameter: 3.75" Depth: 0.5" CUPCAKE PAN: Outside Dimensions: 5 3/4" X 3 3/4" RECTANGULAR PAN: Outside Diameter: 5.5" X 3.63" (Slightly smaller than Hasbro pan) Depth: 0.5" HEART PAN: Outside diameter: 3.75" Depth: 0.5"