These are new, in plastic, never used tweeters. I got them when the system was replaced under warranty for faulty crossover that also ruined a driver in the system. There was no need to replace the tweeters already installed in the car, and have never used these new ones. They are part of the 246ix 6.5" component set--the set is rated at 150 watts r.m.s.--don't know what the tweeters alone are rated; but are part of a very quality speaker system. The original tweeters (6 years old) are in my Mustang playing strong! Set was $550 in 2003. $50 + shipping.