The most advanced lighted nock on the market! Replaceable lithium battery lasts up to 90 hours, and automatically lights with every shot thanks to a reliable magnetic switch. Consistent nock position, lightweight, flash mode, on/off mode. X-Nock model fits Axis® or MFX™ arrows. 2 pack.
Manufacturer model #: 117731.
Easton® Tracer RLi™ Lighted Nock Replacement Batteries - 3 Pack sold separately and can be found through item search for item number 38-890-604-99