Approximately Dimensions: 

           Length : 5/8" 

           Diameter : 3/8"

Approximately Crossover points:

             26 K Hz and above at 4 Ohm

            13  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 .