Norpro 8-Quart Krona Stainless Steel Steamer Cooker, 4 Piece Set Set includes stockpot, steamer, colander and vented tempered glass lid. Perfect for shellfish, pasta, vegetables, sauces and blanching. These pots combine the best features, from rapid even heat conductivity, avoiding hot spots to protecting the flavors of your meals. Stainless steel construction. TRI-PLY ENCAPSULATED base incorporates 2 layers of stainless steel with an aluminum core layer, giving you uniform cooking, no hot spots and quick, efficient heat conductivity.