The jig has the reference "3 star" but it is unquestionably 5 !!! Its heavy and thick coating ensures an ideal cooking. I was skeptical with aluminum argument for my induction hob but it works wonderfully. The side handle is ideal for well use this jigsaw big (diameter 27 cm) when it is busy, and just its size makes it easy to make dishes in family quantities. It will also baked (the manufacturer provides up to 200 degrees!), Such as equipment for professional kitchens. Finally, note the "seal" the glass cover indicated "aluminum" too, so invisible yet perfectly effective. A very good product, quality, well finished, robust, easy to clean: the professional level equipment that is perfectly penny!