Excalibur has teamed with arrow manufacturer, Easton, to develop the new Diablo Carbon Arrows, specifically designed for use in Excalibur"s Matrix Series crossbows. 18" long and featuring 2" vanes, they are spined for the blistering speeds you get with Excalibur"s Matrix crossbows. A heavier front insert increases front-of-center weight for unparalleled accuracy. Diablo Carbon Arrows also feature a flatback insert which means no need for nocks, which gives you much more reliable contact with the string. 6 pack. Model 22DV18-6.