· Superior Quality: Allwork 58X toners are equipped with the latest patented chip to get vibrant colors and rich blacks.· Included: 2 Black CF258X 58X CF258A 58A Compatible Toner Cartridge Replacement for HP 58X CF258X Toner Cartridge Black· Printer Compatibility: 58X CF258X Toner compatible with Pro MFP M428, M428dw, M428fdw, M428fdn; Pro M404, M404n, M404dn, M404dw, Enterprise M430f, M406dn, M304n, M304dn Printer· High Page Yield: Up to 10,000 pages for 58X CF258X toner cartridge black (Letter A4, at 5% coverage)· With Latest Patented Chip：Allwork toners are equipped with the latest patented chip that allows printers to indicate life of toner cartridges for each color and do color correction to maintain vibrant colors and maximize toner usage.