There are 4 bushes, each one a different size. Sometimes if you are using a mandrel to turn the blanks the 2 middle bushes are in one piece to assist in getting them in the right place.
You need to pay careful attention to ensure you get all 4 bushes in the right place, and I find it necessary to check that against the instructions every time.
The tubes are 1 7/8"for the upper tube and 2 1/16" for the lower tube.
the sequence is (from top to nib) .46" .53" .575" and .475 for the nib end.
Incidentally, where have all the Cigar kits gone? They are very difficult to get hold of and my supplier, Turners Retreat has stopped selling them, and other places are sold out.
Mike