Hypr-V 20" Crossbow Bolts are built for serious impact, delivering deep penetration and hard-hitting knockdown power. Engineered for precision with advanced carbon construction and a straightness tolerance of A 0.003" for tighter groupings. Heavyweight design for max penetration Advanced carbon build for consistent accuracy Precision-sorted for A 0.003" straightness 20" length with 3" vanes 390 grains (with 100 grain point) V-Track nocks for optimal alignment .300" inner diameter, .346" outer diameter