For use in models: Ricoh Savin Lanier IM C2000, IM C2500 (note: not for Models with MP C prefix) 16,500 pages per black cartridge, 10,500 pages per color cartridge; based on the ISO/IEC 19798 industry standard of 5% page coverage PREMIUM Toner kit contains 4 cartridges Our toners are formulated and produced in the USA to match density, line resolution and cartridge yield. QUICK SHIPPING and 100% Performance Guarantee