Main Features:

• Automatically lighted after shoot,you do not need use hand to light it first!
• Fits all arrows with inside diameter 6.2mm carbon shafts
• Constructed of a super tough polycarbonate material with a press-in-fit design
• Their double-snap throat with special string angle compensation keeps arrows on the bowstring,even at extreme angles and with string loops
• Insert the nock into shaft,align it to your desired position and you're ready to shoot 
• The nock has a string activated linear switch that is housed within the nock and will not turn on or off accidentally
• Battery (non-replaceable) last over 24-48 hours(battery included)
• After arrow retrieval simply push back activator switch located in side of nock to the off

Specification:

• Material:ABS
• Length:45.5mm
• Light color:red,yellow,blue,green,colorful

Note:

• Please allow 0.1-1cm differences due to manual measurement
• Due to the difference between different monitors,the picture may not reflect the actual color of the item.Thank you!

Package Included:

• 1xArrow nocks(battery included)

NO Retail Box.Safely in Bubble Bag.