Original Part Code:72K10C0 72K10K0 72K10M0 72K10Y0.
Page Yield:8,000 Pages per Black & 8,000 Pages per color cartridge.(Letter/A4, at 5% coverage).
After sales Service: If you have any doubts,you can contact us via Amazon.we will reply to your email with in 24 hours and give you a satisfactory solution.