Aztech Compatible Toner Cartridge Replacement for 508X CF360X(12,500 Pages Yield,Black) Lifetime 100% guarantee and Free-replacement warranty on any products you buy from Aztech. Page Yield: 12500 pages per cartridge at 5% coverage (Letter/A4). Keep it ventilative and dry and cool under normal temperature. (Package with instruction) Includes 1 pack High Yield Black Toner cartridge All Aztech products are manufactured in facility certified with ISO9001, ISO14001, ROHS, STMC, CE and MSDS. Used for Printers HP Color LaserJet Enterprise M552dn M553dn M553n M553x, MFP M577, MFP M577Z, MFP M577dn, MFP M577f, MFP M577c