Cooks Standard Multi-Ply Clad Stainless Steel Universal Steamer Insert with Lid, Fits 6.25, 7, and 8-Inch Cookware;

Cooks standard mulitclad stainless cookware features air-flow technology makes handle stay cooler than normal handle type. Constructed of clad metal of 3 layer: Interior lining is premium grade 18-10 stainless steel, core made of multi-element alloy aluminum for superior heat distribution, the core of aluminum goes from bottom all the way to side wall, stainless steel does not transmit heat quickly but aluminum does. Aluminum is soft and dents easily, stainless steel is hard and strong. This means you get the toughness of stainless steel with the even heat distribution of aluminum. Exterior is scratch resistant brushed treatment, bottom is also compatible to conduction stovetop, this cookware is dishwasher safe.