This is a CHEFMADE 12-inch round tart pan with a removable loose bottom. 
It is made from commercial-grade, thickened 2.0mm carbon steel for even heat distribution. 
The pan features a food-grade silicone non-stick coating that is PTFE and PFOA free. 
The removable bottom design allows for easy release of baked goods without damage. 
It is suitable for making tarts, quiches, and pies.