Lighted Nocks for Arrow Crossbow with 7.62mm/.300" Inside Diameter

Features
Super long batterie life
High Visibility LED: An essiential tool for archery hunting
Archery lighted nocks with breakthough design
Inside Dia: 7.62mm/.300"
Batterie: Lithium batterie, replaceable
Non-waterproof
Clear plastic for maximum light transimission
Avaible Colors: Green/Red/Yellow/Blue/Colorful(Flashed with 7 colors)
Package Contents
6 * Lighted Nocks + 1 * Screwdriver
About New R & D (Research and Development) Item --Archery Lighted Nocks for Crossbow Arrow
Benefit:
# Flashed lighted nocks that would change 7 colors constantly
# Designed for greater efficiency in low light, enhanced precision, and vastly improved retrieval
# Help you take aim at improving your archery accuracy
# These nocks feature to retrieve your arrows with ease and pinpoint accuracy
# Accommodate battery life to extended trips
# Piston driven contact switch ensures L.E.D. illumination every time.
# Flashing high-visibility light makes it easier for you to find your arrow
# Fits bolt size .300“ ID(Inside Dia:7.62mm)
# Work for: Aluminum arrow shafts & carbon arrow shafts & glassfiber arrow shafts
# 31 Grains total weight
# Package:
6 * lighted nocks
1 * Screwdrivers

Note:
1.After the battery is weak. Please do not throw away, After a period of time, It can be a few hours again work, Until power is completely off.
2.This is not a toy, do NOT shoot at people