This Rigid Industries LED Light Bar Resonance Damper is designed specifically to fit seamlessly in-between the heat sink fins of your LED light bar. This Resonance Damper will drastically reduce the amplitude of mechanical vibrations in your E-Series and RDS-Series Light Bars. This 3-piece set can be slid on to any location on your Rigid Industries LED light bar to absorb harmonic distortion from the fluting of extruded heat sink fins in your LED light bar, at high speeds.