HP 56 C6656AN & HP 57 C6657AN Compatible Re-manufactured Combo Pack Ready to use Our cartridges are pre-filled & ready to use. Quality Assurance Every cartridge is methodically tested by our team to ensure that you can print hassle-free. We offer the highest quality printing. Superior Quality Ink Our high quality UV resistant pigment-based ink and dye-based ink will yield closest quality to OEM inks.