Ravin’s .003 Match Grade R18 Lighted Arrows deliver high speed and accuracy. These premium bolts feature 100% pure carbon construction, and are equipped with Lumenok technology to help find your shots after being fired. Features:350 grain (with 100 grain field tip- not included)100% pure carbon constructionStraightness tolerance: .003”High-impact brass threaded inserts2” offset vanesHigh-impact aluminum nock bushingsRavin-engineered polymer nocksLumenok™ TechnologyNote: For use with Ravin R18 Crossbows only Ravin R18 Lighted Arrows .003 3PK R147