Get the quality printing you need for your home or business projects with this Oki 42377801 Ribbon Black. It provides a long life and an exceptional character definition. This matrix nylon cartridge is designed for use with Oki Microline 420, 490 and 491 Series printers. It yields 7.5 million characters in dark, pristine black ink. This Microline Ribbon in black will give you the quality printing you're looking for. You can use it whether you've got several pages ahead of you or just a few. This compatible ribbon is up to the task. The longer the life of your cartridge the better off you will be. So stick with a printer ribbon that will give you a high yield and a long life. You can use it at home or in a commercial office. Make the Oki 42377801 Ribbon Black your next purchase and type away on your home or business work.