The Broil King Imperial deep dish wok topper is crafted with high grade 1.2 mm stainless steel. The uncommonly large 13-in x 9.75-in design gives you more cooking space and the deep dish keeps foods contained within the wok. Oversized 10 mm stainless steel handles and raised square perforations add to its rigidity. The raised perforations also help keep food from sticking.