Recessed tweeter mount uses standard 1-3/4 hole saw|Butyl rubber surround|1 Year|Standard Warranty;Tweeter system with 120 watts maximum power handling (60 watts RMS);One-inch PEI dome tweeter;External, audiophile-grade, 12dB/octave high-pass crossover at 3.5kHz;Surface/angle/flush mounting options;3.5kHz - 22kHz frequency response with 90dB sensitivity