Oki 2569 Fabric Ribbon Black 2874/2455 for use with ML380/385/386/390/391/ 3390/3391. Install a genuine OKI ink ribbon in your ML390 series Microline dot matrix printer for top quality results. This ribbon is designed for an easy changeover for quick installation. The high quality nylon construction ensures minimal wear, offering a lifespan of up to 3 million characters per ribbon. It uses premium-quality inks with a metered output for consistent quality, precisely controlled to ensure even coverage for each and every character.