OEM-GENUINE OPTIMIZER HP 831A ....CZ706A....775ml... Latex 300 & 500 Latex Ink ..HP Latex L310, Latex L315, Latex L330, Latex L335, Latex L360, Latex L365, Latex L370, Latex L560, Latex L570....Also see: CZ680A...CZ682A...CZ683A...CZ684A...CZ685A...CZ686A...CZ687A...CZ706A
 "831A ...CZ706A...775ml....OPTIMIZER")