TenPoint Pro Elite 400 20" Arrows w/Alpha-Nocks, 3-Pack 20" carbon fiber construction 400 grains +/- 2-grains per dozen weight tolerance 61-grain aluminum insert, 14% F.O.C. .003" straightness tolerance Inside diameter: .300" Slightly offset 3.5" Bohning X vanes White Alpha-Nocks glued in Alpha-Nocks are compatible with any TenPoint, Wicked Ridge, or Horton Crossbow Please note, Vane colors may vary.