Okidata Microline 721

OEM printer ribbon for Oki® Microline 420, 420N, 421, 490, 491.
For use with Oki® Microline 420, 420N, 421, 490 and 491 printers. Long life and exceptional character definition. Device Types: Printer; Color(s): Black; OEM/Compatible: OEM.

Okidata 42377801 Black Printer Ribbon (6 pk)
42377801 Black Printer Ribbon (6 pk) compatible with the Okidata ML 420/ 421/ 490/ 491/ 720/ 721/ 790/ 791. The use of compatible supplies does not void your printer warranty.