The 10" diameter fry pan is our most popular size and offers great versatility. Swiss Diamond cookware features a revolutionary non-stick pan using diamond crystals - the hardest material known to man - to form a virtually indestructible non-stick cooking surface that will not peel, crack or blister. These thick 6mm pressure cast aluminum pans will not warp. In addition, the ergonomically designed handles are stay cool and oven safe up to 500°F. Swiss Diamond is easy clean, dishwasher safe and metal utensil safe. There is a limited lifetime warranty against defects. The pans are made in Switzerland.