Excalibur FireBolt crossbow bolts are constructed from the highest quality materials available for superior speed and consistent accuracy. Made from series 22 carbon these bolts come fletched with 4" vanes for superior accuracy. These bolts also come custom equipped with Burt Coyote's Lumenok professionally installed. The lighted insert will help you track your arrow, even in today's lightning fast crossbows.Note: Arrow nock color and fletching color on arrows is selected at the factory. All arrows within a single pack will be the same fletching and nock color combination. Depending on production runs colors may vary.