For use in Ricoh Lanier Savin MP C3003, MP C3004, MP C3004ex, MP C3504, MP C3504ex Compatible with RICOH part numbers: 841813 for black, 841814 for yellow, 841815 for magenta, 841816 for cyan PREMIUM Toner kit contains 1 of each CMYK cartridge; MADE IN USA (not imported) PAGE YIELD: 29,500 pages/black and 18,000 pages/color, based on the ISO/IEC 19798 industry standard of 5% page coverage