AAE Bitz Nock Receiver Crossbow Precision vane spacing for crossbows, compatible with Bitzenburger fletching jig;Offers two vane spacing options: 3-vane (120 degrees) and 4-vane (90 degrees);Designed to align and retain most modern crossbow bolt/arrow moon drivers and nocks;Features a set screw for single vane repair alignment;Direct OEM knob replacement;Not compatible with Ravin crossbow nocks (requires Bitz Knob Standard 3-4)
