SSV Works WP-RZF3O+2R Rear Half add on Speaker System, Plugs directly into WP-RZF3O4 BLUETOOTH Overhead Stereo System Plugs directly into the SSV Works WP-RZF3O4 BLUETOOTH Stereo System 100% Waterproof speakers and enclosure 15 minute installation Durable Fiberglass construction for maximum sound quality and zero resonance, Black Texture coat finish matching your vehicles interior finish All stainless steel mounting hardware and installation instructions are included