These printers use the IS56INK cartridge:
Click On a Printer to View it's Cartridges
          Neopost-Hasler IS 5000 A
          Neopost-Hasler IS 5000 B
          Neopost-Hasler IS 5000 C
          Neopost-Hasler IS 6000 A
          Neopost-Hasler IS 6000 B
          Neopost-Hasler IS 6000 C