1" (25mm) super polymer tweeters, 250 watts includes surface, flush and swivel mounting options, built-in Crossover, authentic and high quality product.Car tweeter kit with mounting hardware and Crossovers.Crossover point: 3.5K frequency response +/- 10Db: 4.5K - 20Khz discus high frequency driver. 1" (25mm) Super Polymer Tweeter - 250 Watts