The EVO-X CenterPunch arrows were designed for accuracy, speed and power. They're constructed from 33 MSI carbon fiber and fletched slightly offset, before being fitted with an 84 grain insert. Length: 20 inchesWeight: 445 grainVane: 3.5" Bohning XF. O.C: 17%Interior diameter: .297Exterior diameter: .348Nock: Alpha-Nock TenPoint Crossbows TenPoint EVO-X CenterPunch Carbon Arrows 20 w/Alpha-Nocks .001 Wte HEA-740-36