Ravin xbow arrow carbon w/2" offset vanes 400gr.003" 6pk FEATURES:100% pure carbon constructionStraightness tolerance: .003"High-impact brass threaded inserts2" high-profile offset vanesHigh-impact aluminum nock bushingsRavin-engineered polymer nocks Other Features: High impact brass threaded inserts & aluminum nock bushings,2" high profile offset vanes,polymer nocks for use in all ravin crossbows excluding the r500 & r18 series