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.
Clear 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