It does have a V in the ID. Don't you have a file? That would be FNF instead of CNC. File-N-File.My reason is because I don’t want to go through the complicated machining of the V in the ID to locate the work. The piece looks CNC’d and I don’t have that capability. And since I’m not going to add the hex feature either it’s easier to just make hub and put the three screws in it to hold the work securely. I’m not so worried about centering, yet. I have in my projects like making a key way and needed to reposition the shaft that this tool would have come in handy.