Diablo carbon arrows are specifically designed and spined for use in Excalibur’s Matrix Series Crossbows and the speed they produce. 18″ Arrow Length 250 grain arrow weight .003 straightness tolerance 2″ Blazer vane with a 3 degree offset Equipped with Rhino Nocks Compatible with CeaseFire Technology crossbows or any that utilize flat-back nocks PRODUCT CODE: 22DV18-6