The Bohning Blazer Helix fletching jig is the only fletching jig with a helical designed for 2 inch vanes. The Blazer Helix Jig has a pre-set 3 degree helical built right into the clamp! Designed for 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. Places 3 vanes 120 degrees apart.