Following on the incredible response to the original Bitz Knob, we are proud to introduce the 4,5,& 6 fletch Bitz Knob, designated by Orange anodizing! The Orange Bitz Knob is a creative and sophisticated way to cater to those archers who enjoy the testing, tinkering, and experimenting aspects of archery. It has been tested by professional archers and master builders alike, who attest it provides EXACT vane spacing every time regardless of your desired configuration! Both Bitz Knobs feature positive nock engagement for a more consistent nock fit on hunting or target nocks. The Orange Bitz Knob features three vane indexing options, 60°, 72°, & 90°.