Works in MS631, MS632, MX632 Lexmark Printers This is a Premium Compatible Extra High Yield Toner Cartridge with a 31,000 page yield at 5% coverage per page. Guaranteed to work as well or better than the OEM 66S1X00 cartridge this replaces. Replaces 66S1X00, 66S0XA0, 66S0X0G cartridges. Cartridge carries a one year extended warranty beyond the Amazon 30 day retrun policy. Sensible Toner Compatible Remanufactured Toner Cartridges are designed to replace Genuine OEM cartridges to help our customers save money. Our customers can rely on our Quality Cartridges to work as well or better than the Genuine Cartridges these replace. These are a great substitute for any high volume printing operation. The 66S1X00-C cartridge delivers 31,000 pages of print and work in Lexmark MS631, MS632, MX632 Printers. This is an Extra High Yield Toner Cartridge (31000 Yield). This box contains one 66S1X00 Compaitble Remanufactured Cartridge.