NAP Thunderglo lighted nocks with universal collars for use with aluminum and carbon arrows are built from premium components to withstand repeated high-impact shots. A polycarbonate blend provides the strength and dependability needed for today’s fast-shooting bows while the integrated LED light provides exceptional shot tracking in full daylight as well as in low-light conditions. They are also ideal for tracking shots on flat and 3-D targets at longer distances. Thunderglo lighted nocks are easy to install thanks to universal-fit collars, and no special tools are required for installation or operation. The LED unit automatically activates upon arrow launch and stays on until the shooter unclicks the nock to turn it off. MSRP: $24.99/three-pack; $39.99/six-pack. Contact: www.newarchery.com