2-way car speakers (pair) 4"x6" carbon fiber woofer aluminum alloy tweeter external crossover with two-level tweeter adjustment MClip crossover mounting solution for securing crossover to back of speaker basket or to car door handles up to 30 watts RMS (60 watts peak power) frequency range: 92-20, 000 Hz sensitivity: 87 dB top-mount depth: 2-1/8" grilles not included