HP Maintenance Kit
C7770-60287
is compatible in the following HP Models:
HP DesignJet 820 MFP series
HP DESIGNJET 820 MFP - Q6685A
HP DesignJet 510 Printer series
HP DESIGNJET 510 42-IN PRINTER - CH337A
HP DESIGNJET 510PS 42-IN PRINTER - CJ997A