This product will substantially reduce the amplitude of all mechanical vibrations in either the RDS-Series and E-Series light bars. Rigid Industries E/RDS-Series Resonance Dampers come in a three piece set. It easily slides into any location on a light bar. This product is exceptional at absorbing harmonic distortion that comes from fluting of the extruded heat sink fins in a LED Light bar at very high speeds. Get the Rigid Industries E/RDS-Series Resonance Dampers today and discover their magic.