20 cm Double Boiler. Stainless steel double boiler insert fits 2,3,4 qt. saucepans.An essential tool for delicate butter, egg or cream based sauces. Stainless steel for professional results - 18/10 stainless cooking surface does not discolor, react with food, or alter flavors Cool GripTMHandle Solid stainless steel riveted handle Drip-Free Pouring Rim. Tightfitting cover seals in moisture and nutrients for healthier, more flavorful results, every time you cook