6Pcs Automatic LED Archery Arrows Lighted Nocks 62mm Arrow Nock Tail For Hunting Arrow Shaft Accessories High Quality _x000D_ Main Features: _x000D_ _x000D_ Fits all arrows with inside diameter 6.2mm carbon shafts _x000D_ Constructed of a super tough polycarbonate material _x000D_ Their double-snap throat with special string angle compensation keeps arrows on the bowstring,even at extreme angles and with string loops _x000D_ Insert the nock into shaft,align it to your desired position and you're ready to shoot _x000D_ The nock has a string activated linear switch that is housed within the nock and will not turn on or off accidentally _x000D_ Battery (non-replaceable) last over 24-48 hours(battery included) _x000D_ Specification: _x000D_ Material:ABS _x000D_ Length:45.5mm _x000D_ Light color:yellow,red,blue,green _x000D_ Note: _x000D_ Please allow 0.1-1cm differences due to manual measurement _x000D_ Due to the difference between different monitors,the picture may not reflect the actual color of the item.Thank you! _x000D_ Package Included: _x000D_ 1xArrow nocks(battery included) _x000D_ NO Retail Box.Safely in Bubble Bag. _x000D_ _x000D_