Genuine Panasonic KX-FAT411X black toner cartridge For the Panasonic KX-MB2000 series including the KX-MB2000, KX-MB2000E, KX-MB2010, KX-MB2010E, KX-MB2025, KX-MB2025E, KX-MB2030 & KX-MB2030E The yield is 2,000 prints based on ISO/IEC 19752 standard