What is/are in the package? 1-Pack DR-730 Drum Unit How many pages do these print up to? Each prints up to 12,000 pages based on 5% coverage (Standard Yield) How do you install the toner cartridge? ①Remove the orange cover ②Pull out the plastic tag (where you see the orange ring) which is on the side of the cartridge, if applicable ③Insert into the printer ④Enjoy printing! What are the compatible printers? Brother HL-L2386W HL-L2385DW HL-L2376DW HL-L2375DW HL-L2370DN HL-L2351DW HL-L2350DW Printer Brother DCP-L2550DW MFC-L2715DW MFC-L2750DW HL-L2370DW HL-L2370DW XL HL-L2390DW Printer Brother HL-L2395DW MFC-L2710DW MFC-L2750DW XL HL-L2310D HL-L2357DW DCP-2510D DCP-2530DW Printer Brother DCP-2537DW DCP-2550DN MFC-L2710DN MFC-L2730DW MFC-L2710DW HL-L2375DW MFC-L2713DW MFC-L2770DW 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.