The Last Chance Vane Master Pro Fletching Jig is ideal for archers who are particular about their fletchings. The adjustments on this jig are solid and precise, so you can always recreate the exact fletching pattern you like, even if you fletch arrows of different diameters. Set straight, offset or helical fletchings in three- or four-fletch arrays. • Will do any size arrow with little or no adjustments • Helical adjustment of up to 5 degree and will lay flat every time • Plastic construction