The 4PK XL Toner Cartridge for Canon 054H is a set of high-yield toner cartridges designed for use with Canon printers, specifically the Color imageCLASS MF641Cdw, MF642Cdw, MF643Cdw, MF644cdw, MF645Cx, and MF640C models, as well as the LBP620C and LBP621Cw. Each cartridge comes in cyan, yellow, magenta, and black colors, with a page output of 3,100 pages for black and 2,300 pages for color. These cartridges are equipped with a new chip and are covered by a 3-year manufacturer warranty, ensuring reliable performance for your printing needs.