The Thunder Group ALST002 Steamer Basket/Boiler Set features a durable aluminum construction designed for efficient steaming. With a diameter of 11-3/8 inches and a height of 12-1/2 inches, this set includes two perforated stacks, a bottom, and a cover, allowing for optimal steam circulation. The 3/8-inch perforations ensure even cooking and enhanced flavor retention, making it ideal for vegetables, seafood, and dumplings. This versatile steamer set is perfect for both home and commercial kitchens, providing a reliable solution for healthy cooking.