I have three cues with the MAXX radial pin, and probaly the reason the 3/8-10 shafts fit is because the MAXX is a 10 TPI (threads per inch) radial as opposed to the standard 8. All I can say is these cues go together tight. I've actually had to put some paste wax on the pins and work the threads in a little to stop the squeaking when assembling the cue. I've never had a regular radial pin so I can't compare, but these are solid.