This Is A Brand New Factory Original Replacement RCF M73 Diaphragm (8 Ohm) For N252N, N255N, L8CX200 Driver Tweeter Also For Yorkville Coliseum Series & Performance Sereis, Mackie PA261, Mackie SR1530. Please Look And Make Sure The Diaphragm You Are Ordering Matches The Pictures Above & The Specs Below Voice Coil Diameter :25.4mm Impedance : 8 Ohm Dome : Mylar The Center Distance Of The Two Post Terminals : ~93.5mm We Carry A Full Line Of RCF, 18 Sound, Celestion & Eminence Speakers & Drivers If Youre Looking A Particular Model And You Dont See It Here Please Send Us A Message