The fletcher may be easily adjusted with the furnished wrench for 120 degree three fletch or 75 by 105 four fletch. Large easy-to-turn indexing knob with zero index position mark. Nock receiver may be rotated to any position for precise placement of your nock in relation to the fletching. It will even allow placement of the cock feather down if desired or allow adjustment for best fletching clearance on a particular bow. The clamp is graduated for easy fletching placement in relation to the nock.