This 30cm Black Iron Carbon Steel Wok is made from heavy 3mm gauge material for optimum performance. It will stand very high heat and works on all cooktop genres, including induction. Proven functional design that includes long handle with stainless steel rivets and is perfect for searing and brazing. It is pre-seasoned for better corrosion resistance with vegetable oil. Requires regular re-seasoning with simple step-by-step instructions in the packaging. High Heat Resistance 2.5-3.00mm gauge heavy duty material Proven functional design Sear and Braze like a professional Long Handle in Stainless Steel with Steel Rivets SCANPAN DNA Build up Carbon as a Natural Cooking Surface Pre-seasoned with vegetable Oil Handwash only Easy-to-follow care and seasoning instructions included Made in Taiwan