Killer Instinct's premium Hypr Crossbow Bolt now features the new V-Track nock designed for ultimate accuracy out of narrow axle to axle crossbows. The new V-Track improves nock to string contact, reduces center serving wear and works out of all Killer Instinct Crossbow Models. The Hypr-V crossbow bolts will come standard with all 2025 crossbow models. FeaturesLENGTH - 20"STRAIGHTNESS TOLERANCE - .003"Total Grain Weight: 390 grains with 100gr PointINNER DIAMETER - .300"