Bitzenburger Precision Die Cast Clamp shoe_size_8 these CNC machined pins are color_Last Leaf Ghost these CNC machined pins are the latest pin development from Black Gold® Proven Sitka Gear durability and performance season after season right and left helical clamps are ground with a radius to achieve a true helical fletch• Hollow recess allows for thumb and fingertip control preventing slippage in the hand• Graduated scale at the rear base of the clamp allows for consistent spacing of feathers and vanes accurately from the nock• Knife edge on base of the clamp eliminates build up of surplus glueNote: The steel plate is cased into the straight clamp • Constructed of die cast alloy• Clamp is precision ground to assure identical blade matching