Hunters choose Full Metal Jacket when they need harder hitting arrows and extra knockdown power. Pro-level archers use FMJ to deliver more penetration and shorter blood trails. Utilizing a high-strength, N-FUSED carbon core wrapped in a full metal jacket. The Axis FMJ boasts more bone-crushing power for deeper penetration and more pass thru shots. High strength N-FUSED carbon core with 7075 alloy metal jacket.These can be used with bows 45-60 lbs. These arrows weigh 10.2 grains per inch and have a Spine Deflection of. They come with 360 degree rotating nocks and aluminum inserts at no charge. This shaft size will handle up to an 60 lb bow. And they are 31.5 inches long. Easton ST FMJ Axis Straightness is +/. 002/1000 and weigh within +/-2 grains of each other. The item "Easton ST Axis Full Metal Jacket Arrows 400 Carbon/Aluminum withBlazer Vanes 1 Dz" is in sale since Wednesday, May 04, 2016. This item is in the category "Sporting Goods\Outdoor Sports\Archery\Arrows & Parts\Complete Arrows". The seller is "bullseyefeathers" and is located in Cantonment, Florida. This item can be shipped worldwide.