Check the listing for details. Lumenok Burt Coyote Lighted ECC Crossbow Bolt End Crescent ECC1. Condition: New. Listed at 4.99 USD. Lumenok Burt Coyote Lighted ECC Crossbow Bolt End Crescent ECC1. Condition is New. Shipped with USPS First Class Package. Lumenok Burt Coyote Lighted ECC Crossbow Bolt End Crescen ECC1 Never lose an arrow again! Ultra-bright LED technology gives intense brightness for unmatched visibility at distance, and expedites tracking and locating stray bolts, to save both time and money! Simply replace your original internal mount nocks with Lumenoks. Lumenok® lights up automatically when seated against a carbon or aluminum arrow shaft and stays lit for up to 40 hours. In case of an errant shot, the lighted nock will make finding your arrow much easier. No magnets, no glue, no switches, or moving parts. Light can be disengaged by backing nock out of arrow shaft. Pack of 1 Crescent Carbon Nock ECC-1 Loc Pb4 EB00194