Hello to all, hope all is well. Recently, I had the opportunity to own a Mcdermott Defy Shaft, tried it out and paid for it right after. It's 31" .843 at the joint and 12.5 mm. Having shot with several carbon fiber shafts(Revo, Go, Becue, Jacoby, Cuetec..), the Mcdermott Defy plays the best out of the ones I tried. It is quiet, not soft like some say. The response I get from the cue ball is unbelievable. Before you say it's all in your head, I was a wooden shaft purist and The Defy really changed my outlook on carbon fiber shafts. It does get a little tacky but that happens with all shafts. A quick wipe with a damp cloth or paper towel and you're good to go. Just wanted to share my experience with the AZB community. Give this shaft a try!!