Evolis R4F027NAA HighTrust SO-KO Silver and Black Ribbon for the Primacy ID Card Printer, 250 PrintsPrinter compatibility: This ribbon is made for the original Evolis Primacy ID card printer. It is NOT compatible with the Primacy 2, the Zenius 2, or the Zenius. If you have the Primacy 2 or Zenius 2, see the Evolis R4F227NAAA instead. The Evolis R4F027NAA is the genuine HighTrust SO KO color ribbon for the Primacy. It loads directly into the printer in its standard cassette. Each roll prints 250 full color cards. SO KO stands for Silver Overlay Black