CONCORD 2.8 Quart Extra Thick Tri-ply Bottom Tea Kettle Whistling Spout (Copper) Concord Stainless Steel 2.8 Quart Whistling Tea Kettle Tea Kettle is made from High Grade Full Polished 18/10 Stainless Steel. Tea Kettle hold capacity is 2.8 Quart Tea Kettle Whistles when water is ready. Tea Kettle has extra thick, full Tri-Ply Bottom for the most even and fast heating.