The burners on the hob of our Hymer were very pitted so we tried to find new one's, We tried every where to our thoughts, but firms were complicating the matter by saying how many different burners there was. Then I saw a site for Norfolk Marine and on it were Smev 60 mm and 45mm tops £24.50 for three they delivered in 2 days and we now have a hob that's looks new 