Feradyne Nockturnal Shift Fit Red Lighted Nock 2-Pack - NOCK NT810

These lighted nocks feature ultra-bright string-activated illumination with 20+ hours of battery life and an external on/off switch for easy control. The polycarbonate construction is waterproof and shock-proof, with multiple fitment options (X, H, S, GT) to accommodate different arrow shaft diameters from .204 to .246 ID. Available in red, green, or red/green strobing versions.