HP HEWB3P24A 727 Ink Cartridge, Gray Standard Yield For use in HP Designjet T1500 36" Postscript ePrinter, T1500 36" ePrinter Works in T2500 36" PostScript eMultifunction Printer, T2500 36" eMultifunction Printer Also compatible with T920 36" PostScript ePrinter, T920 36" ePrinter