Instant-on system activates on release
Hidden linear switch won't accidentally activate
Ultra-light design won't alter your shot
Operates for up to 20 hours
These Nockturnal Lighted Predator Crossbow 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. These crossbow nocks come in a pack with three nocks.