Genuine Original HP 51604, Blue, 3ml Printer Ink Cartridge. 750,000 characters.

Yield up to 750,000 Characters. Capacity 3ml. Printhead sealed at factory. No evaporation. Yield up to 750,000 characters. Compatible with ; ThinkJet, D Plus RS-232C, D RS-232C, HP Quiet-Jet, HP-IB, QuietJet Plus, ThinkJet A HP-IB, C Centronics, C Plus Centronics.

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