What is/are in the package? 1-Pack DR-720 Drun Unit How many pages do these print up to? Each prints up to 30,000 pages 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? DCP-8110DN DCP-8150DN DCP-8155DN Printer HL-5440D HL-5450DN HL-5470DW HL-5470DWT HL-6180DW HL-6180DW Printer MFC-8510DN, MFC-8710DW MFC-8810DW MFC-8910DW MFC-8950DW MFC-8950DWT 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.