Built-in vibration isolating attachment and a rubber cushioned frame eliminates mirror shake from idling motors and rough trailsIncreases your field of view, reduces blind spots and minimizes mirror vibration and blurringIt's rectangular, semi-convex shape offers a panoramic perspective for less visual distortionThe spring tension ball mount rotates 360° and tilts 15° for custom positioningMounts to left or right sideFast simple installationFits tubes up to a 1'' diameter.