Premium Quality 18C0033 Tri-Color Inkjet Cartridge compatible with the Lexmark X3350/ X5250/ X5270/ X5450/ X7170/ X7350/ X8350/ P315/ P450/ P915/ P4330/ P4350/ P6250/ P6350. The use of compatible supplies does not void your printer warranty. Product Detail Ninestartechonline.com