The Black Eagle 18/64" Spartan SS R Nock Bushing 81 is designed to fit Spartan shafts, providing enhanced durability and performance. Made from stainless steel, these bushings protect the back of your arrows, ensuring they remain intact during shooting. Weighing 10 grains, they are matched perfectly with Black Eagle R-nocks, ensuring a secure fit and consistent accuracy. Ideal for both target shooting and hunting, these bushings offer superior protection and reliability, making them a must-have for serious archers Black Eagle 18/64" Spartan SS R Nock Bushing 81