Nockturnal lighted nocks are a breakthrough design that combines ultra-light performance with a high visibility light source and “instant-on” simplicity that activates upon release. The patent-pending string-activated “hidden linear switch” is protected deep within the nock and will not turn on or off inadvertently. Battery life is over 20 hours.
Nockturnal S fits most “standard sized” carbon hunting arrows such as Carbon Tech,Victory,Carbon Impact,Carbon Express,Carbon Revolution,Easton,Beman, and PSE.
Fits arrow with inside diameter of .244