I’ve seen too many carbon arrows split at the nock end simply from being shot not to use something[/i:25h8it5h]. I feel epoxied in G-Nock adapters are better, but the collars are better than nothing IMO.
I like the added support they give to the back of the arrow, and have never had a problem with my arrows grouping all the way out to sixty yards. To many people dry fire bows when the arrows splits on the shot. This might not be common to most , but I have seen it first hand twice, once w/ easton 400’s , and once w/ bemans and have heard of many others that it’s happend to.