Modern bows produce amazing arrow speeds, however, they also generate accuracy robbing vibration and game-spooking noise. The Bloodsport Zero Vibration Transfer(ZRT) reduces noise by up to an incredible 60% while eliminating most of the shock felt by the shooter. Unlike all other string dampeners and string stops, the patent-pending BloodSport ZVT eliminates noise and vibration before it is generated. As the string enters the ZVT brush modules, it travels forward, unencumbered, providing a full power-stroke and top arrow speeds.