6-Pack Compatible OKI-420 Ribbon Cartridge Replacement for Okidata 42377801 for Microline 420, 421, 490, 491, ML420, ML421, ML490, ML491 (Black, 6-PK)

["Compatible for: OKIDATA 400 420, For Microline 420, 421, 490, 491, ML420, ML421, ML490, ML491","Box Includes: Includes OKI420 Black Ribbon x 6 (Total 6 Packs)Each OKI420 Black Ribbon comes with independent packaging, allowing you to purchase with confidence and not fear damage","High Quality: OKI420 Black Ribbon uses ultrasonic welding technology to print clear, vivid colors that are not easily faded, providing you with the ultimate printing experience.","Intelligent Recognition: OKI420 Black Ribbon utilizes ten years of research and development technology to perfectly match your printer Receipt Printer. The ultra long OKI420 ribbon uses topological principles to form two printing tracks, positive and negative, doubling the printing lifespan.","Greatly meet your needs: Compatible OKI420 Black Ribbon can be used in any scenario, such as home, office, company, etc. Perfectly meeting your needs for cash register printing, bill printing, and more."]