Genuine Ricoh Aficio Ricoh PRO C651 C751 CMYK Toner Cartridge Set 828185 828186 828187 828188 Genuine Ricoh toner value pack for Pro C651ex, Pro C751, Pro C751ex. Contains one of each color. Black 828185, cyan 828188, magenta 828187, yellow 828186. Provides high-quality results with ease. Integrates seamlessly with your printer. Simple to install and use.