Excalibur’s exclusive FireBolt Carbon Arrows are designed specifically to deliver optimum speed and accuracy with high performance recurve crossbows when using broadheads. FireBolt Carbon Arrows feature a flatback (no nock) insert for more more reliable string contact, reinforced spines and 4″ vanes (colour vaires).Excalibur’s exclusive FireBolt arrows, made specifically for the EXO-Traditional series crossbows. The FireBolt carbon arrows are 20 inch long and feature 4 inch vanes and they are spined for the speeds you get with Excalibur’s EXO-Traditional crossbows. A heavier front insert increases front-of-center weight for unparalleled accuracy. Arrows weighs 265 grainsFireBolt arrows also feature a flatback insert which means no need for nocks which gives you much more reliable contact with the string.