For use in models: IM C4500, IM C5500, IM C6000 (note: not for Models with MP C prefix) Compatible Toner replacement for Ricoh toner Type IM C6000, 842279 PREMIUM Toner kit contains 2 black cartridges; MADE IN USA (not imported) 33,000 pages per cartridge, based on the ISO/IEC 19798 industry standard of 5% page coverage