zebra hybrid bowstrings feature patented z-s twist technology, which virtually eliminates peep rotation. manufactured with bcy 452x material, zebra bowstrings are stretch-resistant and extremely durable. bowhunters and professional archers agree that zebra z-s twist bowstrings are ultimately better-performing that the competition. zebra bowstrings will succeed with mathews, hoyt, bowtech, pse, and any other compound bow model.