The Fixed mounted Doinker Supreme allows the Archer to fully adjust the Flex and Tension of the Doinker to better absorb residual vibration. Features MS1 Suppression Mount Technology. A Vibration Dampener featuring an Internal Steel Weight suspended by two Doinker ITP Dampeners at opposing ends. Light Weight Multi-Modulus Carbon Rod is great in the wind with an outside diameter of .640". Includes an aluminum universal double stack weight.