One jig that can do it all and do it all at once! With the Complete Tower System you can fletch 3 vanes of almost any size in one of three configurations all at once. It comes with 3 sets of arms: 3¡ Helical for up to 2.25" vanes, 2¡ Offset to fletch up to 4" vanes, and Straight for up to 4" vanes. This sytem offers 5 center post options: Standard Carbon(.240 id), A-Nock(.201 id), F-Nock(.164 id), Xbow Bolts and pin nocks.