TenPoint's EVO-X CenterPunch Arrows were specially designed to deliver high accuracy and high velocity. They feature a 33 MSI carbon fiber construction, and are given a LAZER-TECH carbon weave. Each arrow is equipped with an 84-grian insert for enhanced accuracy and more lethality, as well as a Alpha-Bright lighted nock to assist in recovering arrows after they're fired. FeaturesAlpha-Bright lighted nocksF. O.C 17%Vane: 3.5" Bohning XStraightness Tolerance: .001"84-grain insert TenPoint EVO-X CenterPunch Alpha-Brite Carbon Arrows 20 001 Grn HEA-748-3