Check the listing for details. CAPACITOR 4.7uF 250V BIPOLAR BASS BLOCKER SPEAKER TWEETER CROSSOVER 4.7mF 2 Pcs. Condition: New. Listed at 10.00 USD. This is for Two Piece 4.7 uF 250 Volt YELLOW BIPOLAR CAPACITORS BASS BLOCKERS SPEAKER TWEETER CAPACITOR CROSSOVERS For use : Speakers Horn Drivers TweetersApproximate Dimensions: Length : 1" Width : 3/4" Thickness : 3/8" Approximate Crossover points: 8.4 KHz and above at 4 Ohm 4.2 KHz and above at 8 Ohm These bass blocker capacitors blocks BASS and MID RANGE frequencies to go through the tweeters, and allow your tweeter to handle more power , with louder and more cleaner high frequencies . You need these capacitor crossovers specially when your tweeters pop, distort or buzz, when you turn up the volume. Using these capacitor crossovers , in series with the positive terminals of the tweeters , you protect your tweeters from being damage because of bass and mid range frequencies pass through the tweeters . This listing is for only one Yellow Bipolar Capacitor. The tweeters shown in the pictures are to show the applications of Bipolar capacitors and ARE NOT INCLUDED IN THIS LISTING