The Pyramid TW28 is an aluminum bullet horns in enclosure with swivel housing. The bullet horns are 3.75 in size rated at 300 Watt peak power and features a ferro fluid enchanced 1 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! We are an authorized Pyramid dealer!