Had to service some Windows that were not operating correctly,had to remove the window to sort this out, servicing will save you money in the long run.
my-lock.co.uk
Been doing this job for 15+years and not seen one of these cylinders before, made by Fab& Fix held in place by the collar on one end And a small plate on the other end held with Allen keys and no fixing hole under the cam, every day is a school day.
my-lock.co.uk