Smart Carbon Technology. Unmatched durability, consistency and straightness retention. Faster, lighter, and slightly smaller outside diameter than the Expedition Hunter. Straightness +/- .006", weight +/- 2 gr. 500 (6.3 GPI), 400 (7.4 GPI). GT Nock installed, inserts included. Color: Black. 5" TrueFlight Feathers or 4" plastic vanes. If feathers, barred cock feather and solid hen feathers. Colors vary. Sold by dozen or half-dozen.