Easton X10 Parallel Pro Arrows 340 AAE Hybrid 26 vanes 6 pk. High-strength carbon fiber bonded to a 7075 alloy core;Straightness tolerance of +/- .001?;Weight tolerance of +/- 0.5 grains in precise weight codes;Diameter: 4mm for easy tuning and enhanced accuracy;Includes AAE Hybrid 26 vanes;Ideal for all forms of archery: recurve, compound, target, field, barebow;Meets global multi-use competition field compliance standards;Pack of 6 arrows