Commonly used in dot-matrix printers genuine printer ribbons like the ERC-22 offers users an incredible yield for such a small and affordable item. Each of these genuine C43S015358 fabric ribbons have an estimated yield of 6 000 000 characters.The genuine black ink used with the ERC-22 is incredibly resilient and is sure to last many years. You can expect this original C43S015358 fabric ink ribbon to be compatible with the M-191 and all of the other printers found on this page.