Built for speed, ensuring you get the most out of the technologically sophisticated speed bows offered by today's leading manufacturers Incredible durability and straightness retention with less added weight Factory 4 fletched 2.75" Fusion X vanes allow for better accuracy and better groupings 4 fletch design stabilizes quicker even with broadheads Straightness Tolerance: +/- .006" Weight Tolerance: ± 2 grains Accu-Lite nock and insert included Sizes: 600 (5.9 gpi), 500 (6.3 gpi), 400 (7.4 gpi), 340 (8.2 gpi), 300 (8.8 gpi)