1) Aluminum body & cover, polished surface pressure cooker,pressure pots, induction bottom 2) pressure cooker,3L TO 15L Aluminum ALLOY PRESSURE ... PRESSURE COOKERDescriptions:1) Aluminum stronger body and cover,polished surface,Induction bottom.2) Diameter (cm): 18, 20, 22, 24, 26, 28 ... ) Multi-safety devices, keep more safe.6) Quick and even heat transmission.7) Pressure cooker, 3L,4L,5L,7L,9L,11L ...