Insert nock from Beiter.
If you want to find the right Beiter nock for your shafts, try the Beiter Nock Search Tool:
•Each nock has only one single mould for the tightest tolerances and the highest precision.
•Nock grove shaped to to prevent pinching the string for a consistant release.
•Simple to install with an easy push-fit design.
•Symetrical design ideal for use when shooting with a D-loop.
•Type: Insert nock.
•Groove Size: Large (2)
•Compatability: Easton ACE, Uni-bushing system, ACC-00, Navigator, ACG, CarbonONE, NAV 1000-810, McKinneyII, X-pert 1040-980, Victory VAP