This Package Includes the Following Items:2 x Harmony Audio HA-823006 2005-Up General Motors Multi 6 to 6.75 Inch Speaker Adaptor Plate2 x Harmony Audio HA-R65 Car Stereo Rhythm Series 300 Watt 6 1/2" SpeakersHarmony Audio HA-823006 2005-Up General Motors Multi 6 to 6.75 Inch Speaker Adaptor Plate:Accommodates 6 to 6.75 inch speakerApplications:GM Multi 05-UpHarmony Audio HA-R65 Car Stereo Rhythm Series 300 Watt 6 1/2" Speakers:Specifications: 6-1/2" Rhythm Series 2-Way Car Speaker PairPower Handling: Peak: 300 wattsRMS: 100 wattsSensitivity: 90dBFrequency Response: 40Hz-20kHzMounting Depth: 2 3/8"Mounting Cutout Diameter: 5 11/16"Tweeter Size: 1/2"Single 4 OhmFeatures:Direct Fit OEM Replacement SizePolypropylene Injection Molded ConeButyl Rubber SurroundPEI Neodymium Magnet Dome TweeterPassive Tweeter Crossover Steel BasketFerrite MagnetKapton Former Material