Kicker Speaker Bundle - Two pairs of Kicker 6x8 Inch KS-Series Speakers 41KSC684 Two pairs of Kicker 41KSC684 KS-Series 2-Way Car Speakers Peak Power Ratings: 300 Watts per Pair/150 Watts per Speaker Mounting Hole Diameter [in, mm]: 5x7-3/16, 127x182 Woofer Cone Material: Polypropylene Woofer Surround Material: Rubber