TenPoint's Pro Elite 400 Alpha-Brite Carbon Arrows are fletched slightly offset and are equipped with a 61-grain aluminum insert, 3.5" Bohning X Vanes, and TenPoint's exclusive Alpha-Nock and Alpha-Bright system to help locate the bolts after they've been fired. Their Pro-Elite shafts are inspected for straightness within .003 and hand sorted for weight tolerance within 2-grains per dozen. These bolts are compatible with any TenPoint, Wicked Ridge, or Horton Crossbow. TenPoint Crossbows TenPoint Pro Elite 400 Alpha-Brite Carbon Arrows 20 .003 Grn HEA-668-36