Easton Axis Full Metal Jacket Shafts. The Easton Axis Full Metal Jacket is a small diameter and thick-wall carbon core armed in a bone-piercing 7075 alloy metal jacket that gives bowhunters magnum big-game stopping power. The Easton Axis FMJ provides bowhunters higher levels of durability and penetration and easily pulls from high-density targets. The Easton Axis Full Metal Jacket shafts come 12 per package along with Easton X Nocks and Easton Axis Inserts. .Straightness: +/- .002. Weight tolerance: +/- 2.0 grains. Low-glare, hard-anodized diamond pattern finish for easy target pull. High-strength carbon fiber core with 7075 alloy metal jacket. Grains Per Inch: 300 û 11.6 gpi.,340 û 11.1 gpi, 400 û 9.9 gpi, 500 û 8.9 gpi.. These arrows are fletched with 2 inch Speed Hunter Quik Spin Vanes. Please add item number CTL to your order to have your arrows cut to length and item number II to have the inserts installed for you.