The only fletching jig with a Helical designed for 2" vanes. The Blazer Helix has a preset 3 degree helical built into the clamp. Designed for standard carbon shaft diameters The Blazer Helix Jig will give you the perfect helical for the Blazer or any 2" vane. Increased accuracy and arrow flight that will flat out amaze you! Easy set-up and simple operation. Instructions included. Places three vanes 120 degrees apart. Replacement clamps and clamp tape are available.