Built with Rugged Wrap for a much thicker carbon wall than similar shafts. This makes the Onyx an extremely durable ultra-small diameter shaft that provides less wind drift and increased penetration. Straightness tolerance of +-.004â?쳌. Available in sizes 300 (11.7 gpi.) 350 (10.2 GPI), 400 (9.1 GPI), and 500 (8.2 GPI). Includes R.O.C. inserts and nocks.