Renewable Toner Compatible MICR Toner Cartridge Replacement for HP 81A CF281A LaserJet Enterprise M604 M605 M606 MFP M630 DEPENDABLE CHECK PRINTING. RT MICR Cartridge Replacement for HP 81A / HP CF281A SUPERIOR QUALITY. The RT Compatible HP 81A MICR Cartridge contains high quality magnetic toner that guarantees bank acceptance Yield: 10.5k Pages at 5% coverage; prints 40.5k checks @ 3 per page For use in HP LaserJet Enterprise Printers: 600 M604, M604N, M604DN, M605, M605N, M605DN, M605X; M606, M606DN, M606X, M630f, M630h, M630z MFP LIFETIME WARRANTY: we always honor warranty, even if the Amazon return window has closed