Dishwasher safe This set of four stainless steel hob covers will Keep Your Kitchen Looking Neat With These Stainless Steel Hob Covers They have a highly polished finish and fit simply by placing them over the electric hob rings Two have a 17cm diameter and two are 21cm in diameter to fit nearly all standard hobs It fits all standard sized hobs by just placing it over the hob rings. IDEAL FOR MOST KITCHEN ELECTRIC HOBS, THE PRIMA STAINLESS STEEL HOB COVER SET INCLUDES FOUR PIECES IN ASSORTED SIZES. The set of 4 stainless steel hob covers keep the cooker neat, clean & tidy. And also brightens up the kitchen.