The only kind of nocks I can shoot. I'm a recent compound-trad convert and all of the arrows I have on hand are carbons from 50 up to 70# spine. I got them shooting good with my 53# bow two years ago pretty easily, but this 42# one just couldn't do it. I didn't want to spend a lot on new arrows right now for various reasons and I thought of these that my dad had. They are Browning brand carbons from the early 90s that I believe we're built for them by Beaman. Not sure if you are familiar with them but they are a very small diameter with nocks and threaded outserts that glue outside of the shaft. They are somewhere around a 60# spine, but the small diameter puts them closer to center shot and with my dad being 6'7", they were still the full original 32" length. The diameter and length combined with the 190 gr up front let me get them bare shaft tuned. Problem is I only have 10 of them and a handful of replacement nocks, so I have to be very careful with them. The nocks are actually a variety of colors. They were already glued on so I just painted them white along with the shaft.