A:
The insert section of the GrizzlyStik Nock Inserts are approx .199" (note a ring towards the end is .212" for a secure, snug fit). The taper section is approx .275" at its base.
They are only recommended for GrizzlyStik carbon arrows though.
Answered on 10/8/2010 by Johnathan Karch from 3Rivers Archery