Carbon composite provides strength and durability at a lighter weight for a flatter trajectory. TCX nocks. 4" DuraVanes?. Shaft length: 32-1/2". Straightness of ? .0025". Weight tolerance: ? 1 grain. 12 pack. NOTE: Shafts must be cut with a high-speed shaft cutter. Shaft Selection Chart Draw Wt. Shaft Size (lbs.) 26" 27" 28" 29" 30" 31" 32" 46-51 - - 4560 4560 4560 4560 6075 52?-57 4560 4560 4560 4560 4560 6075 6075 58-63 4560 4560 4560 4560 6075 6075 6075 64-69 4560 4560 6075 6075 6075 6075 6075 70-75 4560 6075 6075 6075 6075 6075 6075 76-?81 6075 6075 6075 6075 6075 6075 6075