Calphalon Classic Stainless Steel Cookware, Stock Pot, 6-quart Impact-Bonded Aluminum Bases Provide Fast, Even Heating. Safe For The Stove, Oven, Broiler, And Dishwasher. Long, Ergonomic Handles Provide A Secure Grip Even With Full, Heavy Pans, Stay Cool Even When Pan Is Hot, And Are Double-Riveted By Hand. Fill Lines Make Measuring Easy, And Covers Have Straining Holes That Line Up With Pour Spouts To Drain Liquids Without Having To Use A Separate Colander. High Sides And Narrow Opening Help Minimize Evaporation During The Slow Process Of Making Stocks And Soups. Heavy-Gauge Bottom Provides Even Heating And Is Sloped For Easy Stirring. Protected By Calphalon'S Full 10-Year Warranty.