Small diameter shaft made to deliver performance and penetration. Constructed of high strength carbon-composite fibers. Straightness tolerance of +-.003. Available in sizes 700 (6.1 GPI), 600 (7.2 GPI), 500 (8.1), 400 (9.0 GPI), 340 (9.5 GPI), 300 (10.7 GPI), and 260 (11.5 GPI). Includes X Nocks