What is/are in the package? 4-Pack 410A CF410A Toner Cartridge (Black+Cyan+Magenta+Yellow) How many pages do these print up to? up to 2,300 pages for CF410A Black Toner Cartridge, up to 2,300 pages 411A Cyan 412A Yellow 413A Magenta Toner Cartridge, based on 5% coverage (Standard Yield) How do you install the toner cartridge? ?Remove the orange cover ?Pull out the plastic tag (where you see the orange ring) which is on the side of the cartridge, if applicable ?Insert into the printer ?Enjoy printing! What are the compatible printers? HP Color Laser Jet Pro M452dw/452dn/452nw Printer HP Color Laser Jet Pro MFPM477fnw/M477fdn/M477fdw Printer HP Color Laser Jet Pro MFP M377dw Printer What is the warranty? GTS offers money back warranty on defective toner cartridges What is the shelf life? Please store the unused/unopened toner cartridges in a dry and cool place. Avoid sun exposure Have a question or a problem? Please do not hesitate to contact us, our Customer Services Team will usually response your email or message within 1-2 business days.