The Black Eagle SPT Nocks are engineered for serious hunters seeking precision and reliability. Designed to fit Spartan arrows without the need for a bushing, these high-performance nocks are made from impact-resistant polycarbonate and deliver tight tolerances for consistent arrow flight. Each weighs just 8 grains and is available in multiple color options, offering both function and visibility. Whether you're in the field or on the range, these nocks provide the performance you need shot after shot.