TenPoint ACU-X Lighted Carbon Crossbow Bolts 20in - 3 Pack - TenPoint engineers the TenPoint ACU-X Lighted Carbon Arrows specifically for rail-less crossbows. These premium arrows feature a balanced carbon construction to ensure flat trajectories and maximum downrange accuracy. Because they support high-performance systems, they provide the durability that modern, high-speed crossbows demand. A key highlight of this model is the integrated lighted nock system. This feature helps hunters track flight paths and locate arrows easily in low-light conditions. Furthermore, the ACU-X nock design ensures consistent string alignment for improved shot-to-shot reliability. These arrows arrive fletched and ready to hunt, providing a convenient choice for serious archery enthusiasts. Features Nock - ACU-X Snap-On Lighted Nock (weighs 29-grains); Length - 20in; Weight - 440-grains (+/- 1-grain) (with included 100-grain field point); Straightness - .001in; Vane - 2in Blazer; F.O.C - 13%; Insert Weight - 92-grain Brass Insert; Inside Diameter - . 297; Outside Diameter - .344; Crossbow Compatibility - ONLY for use with TenPoint Rail-Less Forward Draw Crossbows; Pack Option - 3-pack;