The small diameter and thick wall deliver optimum wind resistance, kinetic energy, and penetration. Now with N-FUSED carbon nanotubes, these arrows offer even greater strength, durability, and accuracy. Includes H Nocks installed and HP inserts. Straightness: ?.003". Weight tolerance: ?2 grains. 12 pack. Easton Carbon Shaft Selection Chart Draw Wt. Shaft Size (lbs.) 27" 28" 29" 30" 31" 45-50 500 500 500 400 400 50-55 500 500 400 400 400 55-60 500 400 400 400 400 60-65 400 400 400 400 340 65-70 400 400 400 340 340 70-76 400 400 340 340 - 76-82 400 340 340 - - NOTE: All Easton arrows are shipped full-length and must be cut with a high-speed shaft cutter.