aokur 3PCS 6.2mm Automatic Led Lighted Nock Crossbow Arrow Nock for Hunting Shooting (Red)

Brand New;
This product is the latest Arrow Nock,More convenient;
When you use other product ,the batteries maybe Loose,but this product will not!;
Diameter: For 6.2mm Shaft
Fits any bolt with diameter 6.2MM.;
Don't need light it in advance before shoot;
Easy and durable usage, more competitive price;
The nock will be automatically lighted after shoot;
After arrow retrieval simply push back activator switch located in side of nock to the off
Battery ( non-replaceable ) last about 24-48 hours;
Note: This is not a toy, do Not shoot at people,before you place order,please check carefully with your size. It's for crossbow not for compound bow;