1) Aluminum body &cover,polished surface pressure cooker,pressure pot 2)Aluminum ALLOY PRESSURE COOKER, 3L TO 15L for you.. Aluminum ALLOY PRESSURE COOKER,Aluminium ALLOY PRESSURE COOKERDescriptions:1) Aluminum stronger body and cover,polished surface2) Diameter (cm): 18, 20, 22, 24, 26, 28, 30, 32 for you to choose .3) Polished surface and shining looking. Red lid & blue lid is available as ...