The HP 131A Toner Cartridge Set includes black, cyan, magenta, and yellow cartridges for use with HP LaserJet Pro 200 color M251nw and MFP M276nw printers. These genuine/original cartridges are designed for laser print technology and provide high-quality color printing. Specifically made for HP printers, this set ensures compatibility and reliable performance for your printing needs. Each unit is labeled with its respective color and model to help you easily identify and install the correct cartridge for your printer.