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Each cartridge individually print tested at manufacturing stage.. For Brother Printers - HL-1110, HL-1111, HL-1112, HL-1118, DCP-1510, DCP-1511, DCP-1518, MFC-1810, MFC-1813, MFC-1815, MFC-1818. Colour - Black. Yield - Up to 1,500 pages.