MICRoMICR THN26A Black Laser MICR Toner Cartridge Alternative For HP 26A Is Designed For Use With Hewlett-packard Laserjet Pro M402, Mfp 426 And Matching Troy Series Machines. Cartridge Contains Magnetic Image Character-recognition Ink For Security Purposes In Printing Checks. Cartridge Yields Approximately 3,100 Pages.