Timpano TPT-ST2 CHROME 3.85″ Car Audio Bullet Tweeters 600 Watts 4 Ohm – Pair CRYSTAL CLEAR HIGHS: These tweeters are capable of generating extremely loud volume you need to keep up in the high SPL environment BUILT IN CROSSOVER: A capacitor that eliminates out all low end frequencies that might otherwise harm the super tweeters SLIM PROFILE: High performance pair of 3.85 inch round tweeters with a compact design with 1.39 inches of mounting depth.