Enamel wok 1.Never out of porcelain,not rust. 2.Use steel ... steelThickness:0.7mmDiameter:32/34/36CMInner coating:enamelOuter coating:enamelLid:enamel high coverhandle:bakeliteear:bakeliteBottom:roundpackage:24sets/cartoncarton size:35*35 ... , heavy guage carbon steel with non-stick inside and porcelain enamel outside.Black,dishwasher safe ,works with electric, halogen,gas,ceramic ...