Kenwood Excelon KFC-X172 6-3/4" 2-way car speakers Fits in 6-1/2" or 6-3/4" openings 2-way car speakers for 6-1/2" and 6-3/4" locations (pair) fiber texture carbon-polypropylene woofer cone with butyl rubber surround 3/4" soft dome tweeter impedance: 3 ohms power range: 2-80 watts RMS (240 watts peak power)