Tenpoint ACU-X Features The TenPoint ACU-X lighted carbon arrows are engineered specifically for TenPoint s rail-less forward draw crossbow platform using a new precision spine-indexing manufacturing technique that places the arrow s spine in the exact orientation proven to perform best for this system. The ACU-X Snap-On Nock delivers an unmistakable audible click when properly engaged with the bowstring eliminating lateral nock travel during the shot cycle and preserving string center serving life. Upon firing the bowstring pushes the nock into the bushing and activates its built-in LED light which lasts approximately 24 hours and is easily deactivated by pulling the nock straight out by hand. Each arrow pairs with industry-leading 2-inch Blazer vanes known across archery disciplines for shot-to-shot consistency at extended range and a 92-grain brass insert that produces a 16.5 percent front of center balance for improved flight stability. At 20 inches and 440 grains with the included 100-grain field point every arrow is inspected for straightness to within .001 inch and weight-matched within 1 grain of its companions in the pack. This level of consistency gives crossbow hunters confidence in long-range shot placement on game. Sold three to a pack these arrows are purpose-built for TenPoint s rail-less forward draw crossbows and nothing else. Tenpoint ACU-X Specifications Manufacturer: Tenpoint Model: ACU-X Material: Carbon Fiber Length: 20 Weight: 440 Grain Straightness: .001 Vane: 2 Blazer FOC: 16.5% Insert Weight: 92 Grain Brass Nock: ACU-X Snap-On Lighted Compatible Hosts: TenPoint Rail-Less Forward Draw Crossbows Count: 3-Pack Bullet Weight: 440 Grain Available At: GrabAGun