Aztech 2 Pack Compatible for HP 78A CE278A Black Toner Cartridge 2,100 Pages Yield for HP Laserjet Pro P1606DN P1606 P1566 P1560 M1536 MFP M1536DNF Canon MF4890DW Canon Imageclass D530 Toner Printer 2100 PAGES PER CARTRIDGE 0.0048 PER PRINT, COST SAVING IS REAL FRIENDLY & PROFECTIONAL PHONE IN SERVICES GUARANTEE HAPPINESS, REPLACEMENT / REFUND? IT'S YOUR CALL COMPATIBLE WITH PRINTERS: LaserJet M1536 MFP,M1536DNF,P1560,P1566,P1606,P1606DN,