The Easton 5mm FMJ (Full Metal Jacket) Shafts are designed for archery enthusiasts seeking deep penetration and kinetic energy. These shafts come with 5mm HIT 8-32 inserts and pre-installed 5mm X Nocks. They are engineered with a small diameter, high-strength carbon core, and a 7075-alloy metal jacket for easy target pull and durability. Each pack includes components like the 5mm HIT Insert and X Nock.