Lexmark 80C0S10, 80C0S20, 80C0S30, 80C0S40 OEM Toner Cartridge Set (Includes All 4 Color Toner Cartridges: Black, Cyan, Magenta & Yellow), manufactured by Lexmark This black drum prints 40000 pages with an average of 5% coverage. Nearly all printer manufacturers base their ink/toner cartridge yields on 5% page coverage.
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