SB ACOUSTICS SATORI, TW29-GRILL MAGNETIC GRILL PAIRFeatures Fits All SATORI TW29 Tweeter MDF Frame Black Acoustic Fabric Neodymium Magnets Please Note: The magnets in the grills are located in the same positions as the screw holes in your speaker. These magnets are held on by magnetic attraction to your speaker's steel mounting screws (not included). If you are using brass or stainless steel screws to mount your speakers they are not magnetic and will not work with these grills.