john, at the moment i cannot seem to find them, but i do know that they are bushing set 1b. if you got them from turners-retreat they will give you the dimentions if you call them.
Thanks Greggy.
i've got a picture of the bushings, (no measurements) and it has another bushing in the middle called a tenon bushing. looks like a stepped bushing?
Your measurements, are they imperial or metric?
John. B