Made by 99% pure iron + spinning technology, thick bottom and thin body, fast and even heat distribution. Carbonitriding technology: improve the resistance against rust. No coating both inside and outside, more abrasion resistant and metal gadget safe. Handle and Lid knob made by walnut; Handle with hook and walnut heat stopper, fixed to the body with three rivets. Suitable for all cooktop including induction. Laser mark of "designed by MATTEO THUN & ANTONIO RODRIGUEZ" on the walnut handle. Also available: ZWILLING Dragon Knife Collection.