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