Nockturnal Shift Universal Easy Off Nock System Strobing Red/green 2 Pk.

Nockturnal Shift FIT lighted nocks features a convenient string-activated switch that illuminates immediately when the string is released and an external switch for easy shut off. These nocks feature 20+ hours of battery life and a durable design that is built to last. These nocks include bushings to fit X, H, S, and GT arrows. Each nock in this package weighs approximately 25 grains.

Features:Impact-resistant polycarbonate construction;Water and shock proof;Fits X, H, S and GT arrows;String-activated light triggers illumination at release;20 hours of battery life