TenPoint Crossbow Technologies Pro Elite 400 Arrows 20in w/Alpha Nocks 6pk. The Pro Elite 20-inch carbon arrow is fletched slightly offset and is fitted with a 61-grain aluminum insert 3.5in Bohning X Vanes and TenPoints 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. Specifications for TenPoint Crossbow Technologies Pro Elite 400 Arrows: Manufacturer: TenPoint Crossbow Technologies Fabric/Material: Carbon Length: 20 in Diameter: 0.3 in Nock Type: Alpha Nock Straightness: 0.003 in Features of TenPoint Crossbow Technologies Pro Elite 400 Arrows 400-Grains Balanced at 14percent FOC .003in Straightness Package Contents: TenPoint Crossbow Technologies Pro Elite 400 Arrows TenPoint Crossbow Technologies HEA-660.6: Pro Elite 400 Arrows 20in w/Alpha Nocks 6pk