250 Spine Shafts INTERNAL-FIT X NOCK (INSTALLED) HIT INSERT, CHAMFER STONE, INSTALLATION TOOL, & HIT EPOXY (INCLUDED) Shaft Weight - 11.3 grains per inch Straightness: +/- .002 Guaranteed max Low-glare, hard-anodized diamond pattern finish for easy target pull Weight tolerance: +/- 2.0 grains High-strength carbon fiber core with 7075 alloy metal jacket A small diameter and thick-wall carbon core armed in a bone-piercing 7075 alloy metal jacket gives bowhunters magnum big-game stopping power. Axis FMJ provides bowhunters higher levels of durability and penetration and easily pulls from high-density targets. AXIS Full Metal Jacket SPECS Straightness: +/- .003 Weight tolerance: +/- 2.0 grains Low-glare, hard-anodized diamond pattern finish fo High-strength carbon fiber core with 7075 alloy me A small diameter and thick-wall carbon core armed in a bone-piercing 7075 alloy metal jacket gives bowhunters magnum big-game stopping power. Axis FMJ provides bowhunters higher levels of durability and penetration and easily pulls from high-density targets.