Barnett Headhunter 20 Lighted Strobe Arrows. The 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 20 Lighted Arrows straight out of the box. Includes 3 arrows per pack and field points. Arrow Length 20" Arrow Weight 300g Inner Diameter .300" Straightness +/- 0.006 Field Tip Size 11/32 Multi-color strobing light Archery arrow type Hunting Arrows Shaft length 20 in Material Blend Archery bow type Crossbow Brand Barnett Accessories Lighted Nocks Color Black Piece count 1 Model BAR20031W Age group Adult