PowerBass S-1ZT Zirconium Element Tweeters Surface Mount 1" 6dB Crossover
6dB Crossover Built In. Adding better high frequencies along with easy installation makes these tweeters a simple upgrade to any factory OEM sound system. S-1ZT 1" Zirconium Tweeters. 1" Unique Rare Earth Zirconium Super Tweeter.