Renewable Toner Compatible High Yield MICR Toner Cartridge Replacement for HP 51X Q7551X LaserJet P3005 M3035 M3027 DEPENDABLE CHECK PRINTING. RT MICR Cartridge Replacement for HP 51X HP Q7551X SUPERIOR QUALITY. The RT Compatible HP 51X MICR Cartridge contains high quality magnetic toner that guarantees bank acceptance REPLACES OEM #: HP 51X / Q7551X | High Yield: 13,000 pages; prints 39k checks @ 3 per page For use in HP LaserJet M3027 M3027x M3035 M3035xs P3005 P3005d P3005dn P3005n P3005x MFP printer models LIFETIME WARRANTY: we always honor our warranty, even if the Amazon return window has closed