Nocks can go straight from the package to the shaft in fully operational condition. No prep work is needed. Just insert it, and you are ready to shoot. Piston-driven contact switch ensures L.E.D. illumination every time. The waterproof and shock resistant design is second to none. Shoot it at dusk, and with 20+ hours of battery life, you can still find your arrow the next day.

Features:
Green lighted nock
LED turns on once you release
Break through design
Battery Life Over 20 hours