The only jig with a helical that is designed to fletch a 2” vane. Designed for standard 19/64” diameter carbon shafts, this jig will give you the perfect helical for the Blazer or any other 2” style vane. The Blazer jig has a pre-set 3 degree helical built into the clamp and the jig places 3 vanes 120 degree’s apart. Comes with jig, clamp and instructions.