The most precise jig on the market. Place 3 vanes perfectly 120° apart with one flip of the lever! This jig will fletch almost any size shaft with press fit nock removed, pin nock removed from pin, or crossbow bolt. Fletches 3 vanes at one time up to 2.25 in in length on a 3 right helical. Helix Tower includes 5 center post options: Standard Carbon(.240 id), A-Nock(.201 id), F-Nock(.164 id), Xbow Bolts, and pin nocks.