Horton's Carbon Strike MX matched-weight wrapped carbon crossbow arrows are stronger and more accurate than any other brand on the market.Featuring:- 120-gram tri-wrapped unidirectional carbon fibers- 120-degree seam manufacturing process for maximum hoop strength- Superior component fit- Consistent spine.Horton's Matched-Weight components optimize balance and accuracy. VanesLength: 20"Weight (with 100-grain point): 442 grainsStraightness Tolerance: +/- .003 at 20"