The Pyramid TW28 is an aluminum bullet horns in enclosure with swivel housing. The bullet horns are 3.75 in. in size, rated at 300-Watt peak power and features a ferro fluid enchanced, 1 in. high temperature voice coil, high frequency response of 2k to 25Khz, 20 oz. magnet structure, 4 ohm impedance, 96dB sensitivity and installed with compensation capacitors. The tweeters are very loud and are great for any car, truck or other applications as well. The tweeters comes with 1-year manufacturer warranty for piece of mind.