This wooden lid fits our 14" cast iron wok. It will also fit other woks with the same diameter. The thick 0.6 inch wood helps keep heat in and the temperature consistent until you are ready to serve the beautiful food you've cooked. This is also great to use when you are steaming vegetables, fish, re-heating food, and more. The helper handle was added so you could lift the lid easily. Hand wash only. Rinse with soap and warm water and let dry.