Compatible product replacing 12A6735 (Black), other manufacturer numbers: 012A6735, T520012A6735Delivery contents and capacity/coverage: 3x Cartridge (3x Black with each aprox. 20.000 pages), information about coverage based on prints with 5% page coverage on A4For use in Lexmark 4520, T 520 (D / DN / N / N / SBE), T 522 (DN / N / S), X 520, X 522 (S), Optra: T 520 (D / DN / N / N / SBE), T 522 (DN / N / S), 4520, T520, T520, T520D, T520D, T520DN, T520DN, T520N, T520N, T520N, T520N, T520SBE, T520SBE, T522, T522, T522DN, T522DN, T522N, T522N, T522S, T522S, X520, X522, X522SEurotone: Huge selection of compatible products and accessories for your printer. 100% compatible und perfectly fitting. Strict quality directives and rigid inspections ensure top quality and hassle-free products! Just unbox, install and continue printing.