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. Over 20 hour battery life. Off switch to turn off light after arrow recovery.
Fits - CE Crossbolt, Carbon Express Maxima Hunter, Carbon Express Surge 20", CE Red Hot, CE Parker, Easton FMJ, Easton Power Bolt, Easton 10Pt Pro Elite, Beman Carbon Thunderbolt, Barnett Headhunter.