TukTek Set of 4 Stainless Steel Snack Bowls &ndash; 4.6&rdquo; Silver Rice Bowl Set Great for serving snacks, fruit, rice, deserts, cereal and more. Theses bowls are insulated making them perfect to serve hot or cold food dishes like soup, chili or ice cream. Made of type 201 stainless steel. The bowls are constructed by joining 2 thin layers together creating an airtight thermal insulated layer. The silver tone stainless steel set of 4 bowls each measures 4.6 inches in diameter. Durable bowl set good for kids snack time. Do Not Microwave. Dishwasher safe. Type 201 is an austenitic chromium-nickel-manganese stainless steel.