Feature 1COMPATIBILITY: For 054H 054 toner cartridge, for Color imageCLASS MF640C, MF641Cw, MF642Cdw, MF643Cdw, MF 644Cdw, MF645Cx, LBP621Cw, LBP622Cdw, LBP623Cdw. 2HIGH YIELD: This black toner cartridge can print up to 3100 pages and has a coverage rate of 5% (Letter or A4), which is efficient and practical. 3GOOD PERFORMANCE: This toner cartridge replacement can provide bright color, clear text and graphics, high resolution, and excellent printing effects. 4REPLACEMENT PART: This toner cartridge has standard size and can be directly replaced with used up or damaged ones to ensure stable printer operation. 5COMPACT SIZE: This print cartridge has light weight and compact size, making it easy to install and replace, suitable for homes, offices, or schools.Item Type: Toner CartridgeColor: BlackApplicable Model: For Color imageCLASS MF640C, MF641Cw, MF642Cdw, MF643Cdw, MF644Cdw, MF645Cx, LBP621Cw, LBP622Cdw, LBP623Cdw .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Toner Cartridge