Carbon Express Predator AIR 5mm Arrows 400 6 Pk 1006851. The 5mm shaft diameter supports efficient flight and reliable penetration while 360-degree spine consistency helps maintain predictable shaft behavior for straightforward repeatable tuning. Straightness is held to +/- 0.025 inch max with an average straightness of +/- 0.002 inch and weight tolerance is +/- 2.0 grains. Finished with Q2i Fusion Shield-Cut vanes each arrow includes 5mm aluminum sleeved two-piece 40-grain inserts. Specifications for Carbon Express Predator AIR 5mm Arrows: Manufacturer: Carbon Express Color: Black Size: 400 Features of Carbon Express Predator AIR 5mm Arrows: 5mm diameter shaft 360-degree spine consistency Straightness:+/-0.025 inch max Average straightness:+/-0.002 inch Weight tolerance:+/-2.0 grains Q2i Fusion Shield-Cut vanes Includes 5mm aluminum sleeved two-piece 40-grain inserts Available in 300 350 400 Package Contents: Carbon Express Predator AIR 5mm Arrows