The Pro Elite 400 20-inch carbon crossbow arrow is fletched slightly offset and is fitted with a 61-grain aluminum insert 3.5 Bohning X Vanes� and TenPoint�s white Alpha-Nock and receiver for quick lighted nock installation. Pro Elite shafts are inspected for straightness to within .003 and hand-sorted for weight tolerance to within 2-grains per dozen. - Pack Option: 3-pack - Nock: Alpha-Nock - Straightness: .003 - Grain Weight Tolerance: +/1 2-grains per dozen - F.O.C: 14% - Vane: 3.5 Bohning X - Inside Diameter: .300