Carbon Express Maxima Blue Streak Fletched Carbon Crossbolt with R2 Vanes, 5-Pack DUAL SPINE WEIGHT FORWARD - 2 spines in 1 arrow to manage energy better and make crossbow bolts recover faster, spin 20% sooner, retain more speed, and deliver unparalleled accuracy DIAMOND WEAVE - Back shaft section made with Carbon Express's flagship, proprietary Diamond Weave. Carbon that provides the ultimate stiffness and unparalleled spine consistency. BUFFTUFF - Exterior with precision-milled insert for strength and repeat consistency REAL STRAIGHTNESS - Laser checked for straightness to a remarkable 1/10,000 of an inch and a straightness of +/- 0.0025" is a maximum measurement, not an average SPECIFICATIONS - Fletched with 3" fusion vanes, 22" size, 5-pack plus 2 blue lighted nocks, 403 grains, 0.340" diameter