Features:<br> - Fits all arrows with inside diameter 6.2mm carbon shafts.<br> - Battery (non-replaceable) last over 24-48 hours(battery included).<br> - Automatically lighted after shoot,you do not need use hand to light it first!<br> - Insert the nock into shaft,align it to your desired position and you're ready to shoot.<br> - Constructed of a super tough polycarbonate material with a press-in-fit design.<br> - After arrow retrieval simply push back activator switch located in side of nock to the off.<br> - The nock has a string activated linear switch that is housed within the nock and will not turn on or off accidentally.<br> - Their double-snap throat with special string angle compensation keeps arrows on the bowstring, even at extreme angles and with string loops.<br> Specifications:<br> Material: ABS<br> Length: 45.5mm<br> Package Included:<br> 5 x Arrow Nocks(battery included)<br> Notes:<br> 1. Manual measuring, please allow 1 ~ 3mm error, thank you.<br> 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store