Using many original Samsung K659 parts, this remanufactured alternative is a cost-effective alternative to buying a brand new toner cartridge. Maintaining compatibility with the CLX-8640ND, CLX-8650ND and all the other printers mentioned on this page, CLT-K659S is a great find for those looking to save money.Filled to the brim with a high quality compatible black toner powder, our version of the Samsung K659 keeps the same 20,000 page estimated yield for the cartridge too. We fully guarantee the remanufactured Samsung CLT-K659S black toner cartridge for your complete satisfaction.