This Package Includes the Following Items:1 x Kicker 47KSS504 Car Audio 5 1/4" Component 400W Peak Speakers Pair KSS504 New1 x Harmony Audio HA-SDSK Car Truck SUV Sound Damping Dampening Deadening (2) Mat 10" x 10" Sheets Speaker Install KitKicker 47KSS504 Car Audio 5 1/4" Component 400W Peak Speakers Pair KSS504 New:Features:Kicker KSS SeriesPower Handling200 Watts RMS per Pair400 Watts PEAK per PairGrilles includedWoofer Size: 5.25"Tweeter Size: 1"Dome Material: SilkRated Impedance: 4 OhmSensitivity: 88 dBFrequency Response: 38-21k HzWoofer Mounting Hold: 4.5"Woofer Bottom Mount Depth: 1.75"Flush Mount Tweet Hole Diameter: 1.75"Harmony Audio HA-SDSK Car Truck SUV Sound Damping Dampening Deadening (2) Mat 10" x 10" Sheets Speaker Install Kit:Specifications: Speaker Kit Includes 2 Sheets (Each Sheet 10" x 10") Black Foil with 70 MIL Rubber Butyl LayerSelf Adhesive Peel, Stick and Roll Finish Heat Resistant up to 200 DegreesEliminates Road Noise, Vibrations and RattlesInstall Tips: Remove the speakers from the door panels and clean the metal surface make sure is dry before startingTake the 1st sheet and place it with the speaker hole in the center of the sheet, press into place firmly Cutout the speaker hole using a razor blade and remove the excess material, cutout holes for mounting screwsInstall the speaker into the mounting hole and secure, then repeat for the opposite door panel