Chef's Classic steamer set includes 3-quart sauce pan with steamer insert and tight-fitting lid. Made of mirror-polished 18/10 stainless steel. 4.5-millimeter-thick aluminum disk sandwiched in the base to ensure fast, even heating. Tight-fitting 18/10 stainless steel lids that form a precision seal with drip-free rims. Riveted handles of solid cast stainless steel. Cool Grip stick handles dissipate heat through a V-shaped opening at the pan juncture, and have an opening at the end for hanging. Oven safe to 550 F. Dishwasher safe.