Compatible Star RC300 black Ribbon Cartridge, which lasts ; that is, its duration is the same as that of an original ribbon cartridge. The ribbon cartridge for matrix printing does not affect the printer warranty and, moreover, it is not of a lower quality than the original ones.
Compatible Star RC300 black/red Ribbon Cartridge. This ribbon lasts , the same as that of an original ribbon cartridge. Neither does the ribbon cartridge damage the printer nor invalidate the warranty.