Pot set induction saucepan series wmf gourmet plus material stainless steel lid material stainless steel lid handle stainless steel material properties dishwasher safe features pouring rim measuring scale with lid handle feature cool handles gesundheitshinweis rustproof shape round suitable for gas cooker induction hob ceramic glass hob halogen cooker oven electric cooker manufacturer specific features transtherm universal base quantity 7 piece