Gold Tip FORCE F.O.C 400 Spine Carbon Arrows - 6 Pack - Bowhunting is 100% about penetration at impact, and FORCE F.O.C. from Gold Tip is built to deliver. With an extremely lightweight, high F.O.C. design in a configuration that’s easy for any hunter to use, it makes every shot a show of FORCE. .246in inside diameter +/- .5 grain weight tolerance +/- .001in straightness tolerance Multiple laser full-shaft straightness sorting Smart Carbon Technology – pure carbon, no fillers Legendary durability & straightness retention Includes Brass and Aluminum inserts This has Factory 4 fletch.