Usually our follow focus gears fits well out of the box. But some lenses have a smaller focus ring than zoom ring, which makes it impossible to get the ring over this zoom ring.
But don’t worry, If you have one of those funny lenses – you will get a stripe of tape together with your follow focus gear. To attach the gear you first have to lay the tape around the focus ring of the lens.
Next just pull the follow focus gear down and place it on top of the tape. Now your follow focus gear is ready to use!