All Gold Tip uni-bushings are designed with the nock hole bored all the way through for the ultimate nock concentricity. This bushing will fit any of standard nocks designed for our .246 inside diameter arrows (GT or Acculite). Acculite nocks are the most popular choice, with its shorter nock ears for a cleaner more concise release from the string.
I have Gold Tip Series 22's that I use just about all year for 3D. When shooting in teams and other arrows are in the 12's with you, I've had a few crack the shaft in the rear. I use to use an Easton bushing that fit somewhat in my Series 22's with plastic baggies or a touch of cold melt. But since changing to Gold Tip Series 22 bushings, other arrows glance out after hitting the short and thick neck of the bushing. They also don't need to be replaced as they have such a short and think neck, there's only a slight dent on the collar of the bushing. They fit super tight in the shaft unlike the Easton's that needed help.