These printers use the 797-0 cartridge:

PitneyBowes-Imagistics DM 50

PitneyBowes-Imagistics DM 55

PitneyBowes-Imagistics K 700

PitneyBowes-Imagistics K 721

PitneyBowes-Imagistics K 721 POSTAGE METER

PitneyBowes-Imagistics L 7 MO

PitneyBowes-Imagistics MailStation 2

PitneyBowes-Imagistics MailStation 2 K7M0

PitneyBowes-Imagistics MailStation K-700

PitneyBowes K 700

PitneyBowes L 7 MO

PitneyBowes MailStation 2

PitneyBowes MailStation K-700