Designed for use in the Excalibur, Ten Point, or any other crossbow requiring a flat bolt nock the Burt Coyote Lumenock Bolts are the way to go. 3 complete bolts are in each package. The carbon bolts are 22" long with 4" vanes, and capped with the red Lumenock for a total weight of 340 grains each. The Lumenock is great for building confidence in practice and for hunting as you can see the flight path of the bolt and where the bolt stuck.