The Prime R1675-S is a 6.75″ 2-way component system rated at 40 watts RMS for a new generation of factory replacement speakers. Kit includes two woofers with grilles, two tweeters with integrated crossovers and mounting hardware. 1/2″ (13mm) mylar balanced dome tweeter. Foam surround. Mica-injected polypropylene cone. Stamped steel basket.