100% carbon fiber construction; .204" small-diameter hunting arrow; 31" shaft length; Advanced 3K carbon weave for less torque and tighter spine consistency; Advanced nano-ceraminc coating improves penetration and allows for easy removal; Straightness tolerance: +/- .003"; Each 12-pk. is weight-matched to +/- 0.5 grains for consistency; Includes SHOK TL AI 50-gr. insert and AAE 9-gr. nock; Arrow shafts come unfletched