Killer Instinct Hypr Lite 20in Crossbow Bolt - 6 Pack - Shoot faster than ever before! The High Velocity HYPR Lite bolts are engineered specifically to maximize the speed delivered by today's high-powered crossbows. Advanced Carbon Construction creates spine consistency for greater accuracy, exceptional reliability and repeat performance. Precision sorted for straightness to +/- 0.003in for maximum consistency. 20in Length Fletched With 3in Vanes 370 grains 0.348in Diameter Inserted Moon Nocks