ITEM NO. BL-0003 size:13.8x14.3mm speaker knob speaker partssize: 13.8x14.3mmall kinds of plastic horns ... all kinds of acoustic components,which include professional loudspeaker parts,car speaker accessories,celling speaker cabinet,power amplifier parts,such ... horn,loudspeaker corners,vent,speaker terminal,piezo tweeter,speker gasket,car speaker grill,celling speaker cabinet,in-wall speaker cabinet, ...