I bought this little frittata pan for use when making Tortilla Espanola.  It does the job but I was hoping for something a little more sturdy with a snugger seal.  The small (top) pan does not rest snugly on the larger (bottom) pan.  When I flipped the tortilla, I was confident that the pan would not leak so I flipped it over the sink.  It did not leak... The finished product wound up with a lump in the position of the handle.  I don't know what cause it but assume it had something to do with the construction or fit of the two pans.