These Lexmark 18CX033E (No.33) original colour ink cartridges can be used with the Lexmark P315, Lexmark P4330, Lexmark P4350, Lexmark P450, Lexmark P6200, Lexmark P6250, Lexmark P6350, Lexmark P910, Lexmark P915, Lexmark X3330, Lexmark X3350, Lexmark X4300, Lexmark X5250, Lexmark X5260, Lexmark X5270, Lexmark X5470, Lexmark X6300, Lexmark X7170, Lexmark X7350, Lexmark X7350 MFP, Lexmark X8350, Lexmark X8350 MFP, Lexmark Z810, Lexmark Z815 and the Lexmark Z816 ink jet printer.