LIGHTED REPLACEMENT NOCK - The ACU-X Snap-On Lighted Nock contains a one-piece nock/LED unit that press fits into the arrow's Aluminum Bushing. Upon firing the crossbow, the bowstring's force compresses the two pieces and activates the lighted nock.
SUPERIOR FLIGHT VISIBILITY - The super bright ACU-X Snap-On Lighted Nock helps you track the arrow's path in low-light conditions. The LED light system lasts for approximately 24 hours when activated.
COMPATIBILITY - This lighted nock is for use with rail-less crossbows and fits into TenPoint & Wicked Ridge arrows equipped with an HP Aluminum Bushing (sold separately).
EASY TO DEACTIVATE - Deactivate the nock by pulling it straight out until the light turns off. Using the Bednar Perfect Puller 2.0 (sold separately) makes this deactivation even easier!
HOW TO INSTALL - Be sure the nock's raised line indexing feature is properly aligned with the odd colored vane on your arrow.