powder surface, 2-layer non-stick coating inside,bakelite handle,spiral bottom,healthy cooking&easy to clean up. 9pcs powder cookware setsize:18 * 9.0cm sauce pot 24 * 10.5cm sauce pot 26 * 11.0cm sauce pot 28 * 5.5cm fry pan 16 * 7.5cm sauce pannon-stick and freely combine,easy clean.