1st off, they are arrows, crossbow bolts are about 6" long. An AZ -EZ will re-fletch anything. Some flat nock arrows for xbows have 8-32 tpi threads in nocks, which you can take a regular nock for long arrow, cut off the part that goes in shaft, thread it for a 8-32 screw. 10 pt has a square embedded in their plastic nocks and sells an adaptor for fletching. Hard to tell what you need w/o knowing what type nock is in the arrows you want to fletch, Good luck!!