The all new Vane Master Pro is an innovative tool made to give you perfection in your fletching arrow to arrow. Designed to accommodate every arrow size with no adjustment. Fletch your arrows at a 0-5 degree helical left or right with the ability to hold vanes up to 4" in length. Includes the ability to fletch 3 or 4 fletch configurations (4 fletch knob sold separately)! Using Vane Flat Technology, using two wires to hold the vane giving the clamp the ability to perfectly contour around the shaft for perfect vane adhesion every time. The perfect tool for your home or your shop!