I gave the aluminum pans to my daughter who has a gas stove. I received notice from General Electric that if the pans had Molded stripes or offsets in the bottom they would not cover breakage of the glass top on my new GE electric range. They had found that excess trapped heat localized in the flat bottom of pans with cuts and molded offset could cause the glass to brake. I close not to take a chance and replaced the pans with another brand that had no cuts in the bottom.