Jensen MS6007SR 6.5" Coaxial Waterproof Silver Speaker, 60 watts max Power handling, Sensitivity @ 1W/1 Meter 88 dB, Frequency Response 65Hz-20kHz, Nominal Impedance 4 Ohms, 7-1/8" Grille Diameter 60 Watts Max power handling, Sensitivity @ 1W/1 Meter 88 dB Frequency Response 65Hz-20kHz, Nominal Impedance 4 Ohms 7-1/8" Grille Diameter, 5" Mounting Hole Diameter, 2-3/8" Mounting Depth ASTM B117 Salt Spray Exposure Standard Compliant ASTM D4329 UV Exposure Standard Compliant