I have made quite a number of Cigar pens.
I would say that your present bushings will work.
Usually vendors do not market a kit under the same name like this if that were not the case. There could be exceptions to this, but I know that Ed Brown of Exotic Blanks has many, many years experience in making pens in addition to now selling pen kits of all flavors for about 10 years+ ... he is very trustworthy and would not let such a thing as bushing compatibility fall through the cracks.
You could even put your concern/condition about bushing compatibility in the notes on your order and I have no doubt whatsoever that ExoticBlanks would honor that and even cancel the order before filling it if there was any lack of compatibility.
You could measure your bushings and put the dimensions in your order.
BTW, these specs guarantee compatibilty IF you bought your bushings for a true Cigar kit.
- Mandrel Shaft A or B
- Bushing 11A or 19B
- Drill Bit 10mm or 25/64"
These specs match the Berea Cigar specs which you can find in the Tubes & Bushings tables referenced on the home page of our website and which are filed in our Library.
http://content.penturners.org/library/general_reference/berea_bush_tube.pdf