Star Home Artisan Slab Serve Tray, 21-Inch L by 16-1/2-Inch W Hand-casted and hand-finished Nickel plated cast aluminum; Resists turning, tarnishing, oxidizing, pitting and scratching Food safe material Do not use in dishwasher; Clean with warm soapy water and dry immediately with a soft cloth No Formal Warranty. Will replace merchandise returned for manufacturing defects.