The OKI Genuine Black Toner Cartridge 42103001 is a high-quality, original product designed for use with OKI Data printers, specifically the B4100, B4200, and B4300 series models. This genuine black toner cartridge is manufactured in Japan and ensures compatibility and optimal printing performance. With its reliable brand reputation and specific compatibility, this product is a dependable choice for those seeking consistent and professional results from their OKI printers.