The Thunder Group ALST003 Steamer Basket/Boiler Set features a durable aluminum construction designed for efficient steaming. With a diameter of 11-1/2 inches and a height of 14-1/2 inches, this set includes two perforated stacks for optimal steam circulation, a sturdy bottom, and a secure cover. The 1/16-inch perforations allow for even cooking while retaining nutrients and flavors. Ideal for preparing vegetables, seafood, and more, this versatile steamer set enhances your cooking experience.