High modulus carbon fiber incorporated into a high performance target arrow design. Offers a combination of lightweight and durable materials for flatter trajectory. Straightness tolerance of +-.006â?쳌 and weight tolerance of +-.5 gr. Available in sizes 300 (7.0 GPI), 350 (6.4 GPI), 400 (5.9 GPI), and 500 (5.0 GPI). Includes F nocks and nock bushings. All other components sold separately.