I ran across this thread in the Cue/Shaft review from a few months ago that had no replies, and am very curious about it, has a 4 dot pattern on the bolt and looks well done. Can't quite make out what is written on the shafts.
https://forums.azbilliards.com/showthread.php?t=473521
https://forums.azbilliards.com/showthread.php?t=473521