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 55-70 lbs. These arrows weigh 11.3 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 70 lb bow. And they are 32.0 inches long. Easton ST Axis Straightness is +/. The item "Easton ST Axis Full Metal Jacket 340 Carbon Aluminum Arrow Shafts 12/Shafts" is in sale since Sunday, May 22, 2016. This item is in the category "Sporting Goods\Outdoor Sports\Archery\Arrows & Parts\Complete Arrows". The seller is "sullivan352109" and is located in Cantonment, Florida. This item can be shipped worldwide.