Barnett's popular HeadHunter™ arrows just got an upgrade with innovative strobing lighted nocks. These half-moon nocks feature multicolored strobing lights, tested to outperform static lights when identifying shot location and retrieving arrows in lowlight conditions. The arrows use a pressure-sensitive design to begin strobing on impact. When not in use, easily disable the strobe lights with an on/off toggle switch at each arrow's nock base. No assembly required " begin using the HeadHunter 22" Lighted Arrows straight out of the box. Includes 3 arrows per pack and field points. Warning: Due to the Extreme POWER of the Hyper Raptor Crossbow - DO NOT USE HEADHUNTER STROBE LIGHTED NOCKS, ONLY USE either the Hyperflight Arrow, the Standard Headhunter Arrow or the Hyperflight Lighted Nock. Do not use the HEADHUNTER Strobe nock as this will DAMAGE your crossbow