what is the difference between a X7 and a XX75 Nibb? for that matter, what is the difference in the arrows. I concerned about 1816 arrows right now, I'm thinking that the XX75 Nibb is a bit smaller and the XX75 has a thicker wall? bruce
X7 Shafts have a straightness of .001. XX75 carry a straightness of .003. X7 Nibbs can carry a different and more precise difference in weight and wall thickness. Depends on the % of the nibb.
X 7 carry a straightness of .001 were xx75 have a straightness of .003. XX78 's carry a .001 in straightness as well. X7 are used by target and 3 d shooter mostly and the Nibbs of a X7 usually will not fit in a XX75 or XX78 because of the wall thickness.