Karl Kruger denver stainless steel series is made of stainless steel. Inside polished, outside satined, glass lid with ventilation hole, each part in foil welded with ink inlay, suitable for all types of cookers, also for induction cooking ranges. Karl Kruger as an importer of household goods and gift items, we have been successfully present on the market for over 50 years. As an owner-managed company, founded by karl krüger in the mid-1950s.