Standard diameter hunting shaft made from high quality carbon composite fibers with ICE coating for easy removal from targets and increased penetration. Straightness tolerance of +-.003â?쳌 and weight tolerance of +- 0.5 gr. Available in sizes 300 (9.9 GPI), 350 (8.7 GPI), 400 (8.2 GPI), and 500 (6.9 GPI). Includes nocks and VF 22 gr. inserts.