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 0.003” for maximum consistency. 20” length fletched with 3” vanes, 370 grains (with 100 grain point), 0.348” Diameter, 6 per pack, inserted moon nocks.