This perforated stainless-steel insert slips inside any All-Clad 3- or 4-qt. saucepan for steaming vegetables or fish. A healthful way of cooking, steaming helps preserve nutrients and keeps foods moist. Perforated stainless-steel insert slips inside All-Clad D3 and D5 saucepans for steaming vegetables or fish. Fits inside All-Clad D3 and D5 8" diam. saucepans and soup pots. Riveted stainless-steel handle. 8" diam. D3 lids are compatible with steamer top, but the 8" diam. D5 lids will not fit steamer top. Commercial Grade: Thoughtfully designed and expertly engineered to meet rigorous standards and best practices from select commercial testing.