Bitzenburger Fletching Clamp Right Helical. These Fletching Clamps by Bitzenburger are properly spaced to evenly distribute pressure ensuring each feather is pinned equally. The Bitzenburger String Fletching Clamp features a thumb and fingertip control for slippage in hand. There is even a graduated scale at the rear of the base of the clamp for consistent spacing of feathers and vanes. Each Bitzenburger Fletching Clamp is precision-ground to assure identical blade matching. Use this Bitzenburger Fletching Clamp to keep your string in place while fletching. Package Contents: Bitzenburger Fletching Clamp Each die-case clamp is precision-ground to assure identical blade matching. Hollow recess allows for thumb and fingertip control preventing slippage in hand. Graduated scale at the rear of the base of the Clamp for consistent spacing of feathers and vanes.