Half moon style Lighted crossbow nock
HIGH VISIBILITY and LONG LASTING LITHIUM BATTERIES - Shoot it at dusk, and with 48+ hours of battery life, you can still find your arrow the next day
NO ASSEMBLY REQUIRED - Nocks can go straight form the package to the shaft in fully operational condition. No prep work needed. Just insert it, and you are ready to shoot
Fits bolt size .300'' I.D.
Has a plunger to activate the light, hole on side to turn off.