6pcs Crossbow Bolts Lighted Nock Automatically Archery Hunting 7.6mm LED Nock

Description

Feature:
About 30 hours of battery life (non-replaceable)
Bowstring Activated On-off Switch
Waterproof and shock resistant
High- Visibility LED, no assembly required.
Light weight and precision-balanced for superior accuracy.
String activated on-off switch.
Color: Green, red, blue, yellow, purple.
Weight: 30 grain
Material: Clear plastic + LED stick
After the battery is weak batteries do not throw away, put some time and can be a few hours,
so again, the power completely used up, individually sealed storage battery can extend the battery life.
Specification:
Fits for crossbow bolt size 0.297"-0.302"(7.6mm) ID
Quantity: 6pcs (6pcs in one box)
Work for: crossbow bolts