Dr. Weil 12-Inch Wok Set Includes Knife and Cookbook Unique Rolled and Sealed Rim Ensures Aluminum Never Touches Your Food 5-Ply Bonded with 18/10 Stainless Steel for Optimum Heating; Aluminum Core for Fast Even Heat Distribution Ergonomically Designed, Riveted Handles that Stay Cool Perfectly Balanced for All Types of Cooktops [Including Induction] Dishwasher Safe.