A heavier weight and stiffer spine make this bolt perfectly suited for high draw weight, high speed bows. Features a straightness tolerance of +-.005â?쳌 and a weight tolerance of +- 2 grains. Shafts weight 13.9 GPI. Available in 20â?쳌 and 22â?쳌 lengths. Includes brass inserts and aluminum nocks. Factory fletched with 4 in. vanes. Finished weight of 490 gr. (20 Inch) or 518 gr. (22 Inch) with 100 gr. point.