Carbon Express Lighted Nocks

works on all arrow brands with an inside diameter of .244. The Carbon Express Light Nocks, Lazer Eye lighted nock aids the bow hunter in following the flight on an arrow and determining the location of impact on an animal. The added benefit is that it also helps prevent arrow loss in the event of a pass-through shot or even that unfortunate miss guided shot. Weighing only 18.5 grains, the Carbon Express Lighted Nocks are only 10 grains more than the standard Carbon Express nock which equates to no difference in arrow flight or impact area up to approximately 40 yards.