Lexmark C734 4-Pack Genuine Return Program Toner Cartridge Combo Set. C734A1KG Black, C734A1CG Cyan, C734A1MG Magenta, C734A1YG Yellow, Lexmark C734 4-Pack Genuine Return Program Toner Cartridge Combo Set. C734A1KG Black, C734A1CG Cyan, C734A1MG Magenta, C734A1YG Yellow,