These remanufactured cartridges have been assembled using both genuine Kyocera TK-3100K components and high quality compatible. All recycled Kyocera 1T02MS0NL0 parts have been examined closely and cleaned to ensure quality. This mix of recycled and new components in our remanufactured Kyocera TK3100K toner cartridges means the product is both eco-friendly and incredibly reliable. With the same 12,500 page yield and compatibility with all the same printers (including the Kyocera FS-2100DN), this refilled Kyocera TK-3100 is a great choice.