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. Vanes Length: 20" Weight (with 100-grain point): 442 grains Straightness Tolerance: +/- .003 at 20" Manufactures Website Address www.crossbow.com Warranty Information Warranted against manufacturer defects.