Tenpoint Pro Elite 400 Carbon Arrows 20 White Product Details 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