FOCAL PC165 SFFOCAL (PC 165 SF) 6 1 2" 2 WAY CAR SPEAKERS STEP UP TO SLATE FIBER You can always count on Focal's dedication to innovation. From beryllium to flax, their research and development team search far and wide in the hunt for exceptional speaker materials. With Focal PC 165 SF 6 1 2" 2 way car speakers they've brought Slatefiber into the fold. You can also find Slatefiber cones in high performance home speakers like their floor standing Chora Series. Made