Looking to fit a bunch of Easton XX75 shafts with bushings and Easton nocks.  Anyone know what bushing and size I will need.

You will need a 2117 uni-bushing.All standard uni-bushings on arrows 20XX and larger accept a S-type nock with a .246 ID. bushing.They also make G-bushings for a 2117 also that use Easton G-nocks.The uni-bushing are size specific,what ever size the arrow is.