High strength carbon fiber matrix provides faster arrow recovery and accuracy. .0035in (.0889mm) straightness tolerance. 2" (50.8mm) canes for superior accuracy. 10.2 grains per inch. Recommended for bows with 50-65 lb draw weight. Recommended target point size: 9/32". Spine rating: 350. Outside diameter: 0.295in (7.493mm). Available in 29" and 30". Comes in a pack of 4.