Constructed using X Weave technology for a faster, straighter arrow. Features Quiet Coat for increased penetration, quieter draw and easier removal from targets. Straightness tolerance: +-.006", Weight Tolerance: +-5 gr. Available in sizes 100 (.520 spine, 6.6 GPI,) 200 (.424 spine, 7.5 GPI,) 300 (.359 spine, 8.6 GPI,) and 400 (.337 spine, 9.2 GPI.) Nocks and inserts included. All sizes use 5/16" field point.