Panasonic DP-C405, DP-C406 Black Toner Cartridge (28,000 Yield), Part Number DQ-TUW28K Panasonic DQ-TUW28K Black Toner Cartridge Panasonic DQ-TUW28K Panasonic DQ-TUW28K Compatible Printers: Workio DPC405, Workio DPC406 This listing is for: 1 X Panasonic DQ-TUW28K Black Page Yield: 28000