The Roland Ink Black S-pg-bk Comp W/ By-20 is a genuine/original ink cartridge designed for inkjet printers. Specifically formulated for the Roland By-20 model, this black ink cartridge ensures high-quality and consistent printing results. As an official Roland product, users can trust in its reliability and compatibility with their printer, providing a seamless printing experience. Ideal for professional and personal use, this ink cartridge is a cost-effective solution for producing crisp and professional-looking black prints.