The Hestan NanoBond Stainless Steel 10 pc. Cookware Set incorporates NanoBond technology, a combination of titanium alloys and stainless steel that makes for an extremely scratch-resistant and durable surface that's also a wonderful conductor of heat. All pieces feature flush rivets inside and out for easy cleaning and neatly stacked storage. These pots and pans are four times more durable than traditional stainless steel and are resistant to scratches, staining and salt pitting. The NanoBond series will retain its good looks dish after dish, year after year.