Saunders Brass Nok Sets (Red, 1618 Strand, 100 Pack) are precision-molded brass nocking points designed to ensure consistent arrow positioning on the bowstring shot after shot. Featuring a smooth, protective inner lining to safeguard string serving against wear, these crimp-on brass nocks deliver a firm, slip-free fit without damaging the string. The red color coding provides quick size identification for easy setup and bow tuning.