This Silit Energy Red Wok features an extra sturdy steel core for the most efficient heat distribution, which translates into energy conservation, while the interior is made of Silargan, an ultra hard, smooth ceramic surface that is nickel-free and anti-bacterial. The exterior of this fabulous wok features Silit's durable ceramic coated steel surface, which is scratch- and chip-resistant, along with all metal handles that are heat-insulating and oven-proof. The lid is made of high quality tempered, energy-saving glass for a full visual of your favorite recipe inside. A stainless steel steaming grid is also included, along with a turner and ladle, both with brushed stainless steel handles. The attention paid to every detail on this piece underscores Silit's commitment to the highest design and production standards, delivering the very best quality products to your kitchen. All super-hygienic and dishwasher-safe, and colors will not fade. This wok measures 14-1/4 inches and is suitable for all cooktops.