Tapered plastic wheel is safe for nonstick pans. Welcome to the better wheel. Four-inch plastic wheel is study enough to cut thick pizzas and hard-crusted desserts yet completely safe to use on nonstick pans and other nonstick cookware. Tapered wheel edge allows for effective cutting through pizzas and delicate fruits as well as bar or pan cookies, plus the slick surface prevents cheese and other foods from sticking. Thumb guard and soft grip protect fingers and alleviate cutting stress on hands. Made by OXO, manufacturer of everyday household items. Dishwasher-safe. Handle is 4.75" long.