thanks gadge and cyberjack for the comments, I know there not worth much in the material sense, but the time involved to make manually one offs is considerable. rover would have had a auto machine making hundreds per hour, may be some one might want a set , most of the drive dogs on the mowers I have seen are well worn and when I asked at a couple of mower shops for some the responses and looks I got were not very help full , so I decided to make some, bit of mucking around but worth it

damo