What is/are in the package? 4-Pack TN-315 (B+C+M+Y) Toner Cartridge How many pages do these print up to? up to 6,000 pages for TN315 Black Toner Cartridge, up to 3,500 pages TN315 Cyan TN315 Yellow TN315 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? Brother HL-4150CDN HL-140CN HL-4570CDW HL-4570CDWT Brother MFC-9460CDN MFC-9560CDW MFC-9970CDW Brother DCP-9055CDN DCP-9270CDN MFC-9465CDN Printer GTS offers money back warranty on defective toner cartridges 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.