Compatible Ink Ribbon Erc-32 for M820 825 Erc32p Nk500p (6-pk, Purple) Ink Ribbon ERC-32 For M820 825 ERC32P NK500P Manufactured under the most stringent conditions in state-of-the-art facilities and offer the best value Guaranteed to meet or excee OEM specifications ( 6-PK, Purple ) Compatible ribbons for superior print performance