Fits arrows with Inside Diameter of .244
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
Package inclued - 6PCS Arrow Nocks & 1PCS Screwdriver
Has a plunger to activate the light, hole on side to turn off.