This is 4-Pack compatible Samsung CLX-9350ND, CLX-9250ND toner cartridges. Includes 1 each CLT-K606S (black), CLT-C606S (cyan), CLT-M606S (magenta), CLT-Y606S (yellow). Each toner cartridge is manufactured to be comparative to the original in terms of quality and page yield. Extensive testing and R&D have enabled us to produce cartridges that will not only save you monebut also provide a high quality product to ensure long term customer satisfaction.