- Official Model and Yield: Brother DR331CL (Genuine Drum Unit Set). Official nominal yield is approximately 25,000 pages (based on 5% coverage of A4/Letter paper) .
- Compatible Models: Fully compatible with the three printer models you listed: HL-L8350CDW, MFC-L8600CDW, MFC-L8850CDW .
- Product Form: Typically sold as a drum unit set, containing four color drums: black, cyan, magenta, and yellow .
- Important Note: Toner cartridges are not included and must be purchased separately. After replacement, you typically need to follow the instructions to reset the drum counter .
It is recommended to verify the model number
DR331CL when purchasing to ensure it is the genuine product and not a third-party compatible drum unit.
