The Black Eagle PS25 Nock Bushing 12 Pack is built to deliver superior strength, consistency, and fit. Crafted from 7076-T6 aluminum alloy, one of the strongest available, these bushings are manufactured to the tightest tolerances to ensure perfect alignment and compatibility with PS25 shafts. With three weight optionsa; "Standard, G/M, and Pina; "archers can fine-tune their setup for optimal performance and precision.