Got to admit, Blazer 2" amazed me, their flight was very good..By Bohnings estimates they "catch" my 4" feathers at about 25yards. They are 6to7fps slower than my 4" feathers at point blank range..Another thing they did was to clean them for you, and that was a good thing..Recommend they are put on with at least a twist,rh or Lh, your choice.