Review on Dowel Tenon Center Transfer Tool for Accurate Woodworking by Kelly Noonan

I would give 5 stars if I could use it with the dowel already glued in. I have another set that has a hollow shaft so you can put a glued pin in it to get a proper seat on the backing wood. You don't have that ability. It is neither in the description nor in the photo. I assumed they could be used that way. They're accurate, easy to use, and do all the other jobs they're designed for.