Ceramic Marble Coated Cast Aluminium Non Stick Wok 34 cm (13 1/2 inches) Premium Quality Cast Aluminium with 3 layers of Non-Stick Coating plus 1 layer of Marble Coating makes this wok totally non-stick Marble Coating on both the inside and outside makes cleaning this wok the easiest ever. Marble coating is 10x stronger than teflon and last much, much longer Can be used with gas, electric cookers Eco Friendly and Healthier way to cook, absolutely no oil needed to fry/grill your favorite food.