Sold as 1 Each. Yields up to 20000 pages per standard-yield drum (based on two letter/A4 single-sided pages per job). Part of a complete printing system, this long-lasting drum unit works in tandem with the brand's genuine TN229 series toner cartridges. Expertly engineered for even flow and consistent toner distribution for smudge-free results on every page. Brother's complimentary collection and recycling program means you can easily return your used drum unit back to Brother for proper recycling: it's the way of helping you and your business help the environment. Contains four drums. Compatible with: Brother HL-L3220CDW/HL-L3280CDW/HL-L3295CDW/HL-L3300CDW/HL-L8245CDW; MFC-L3720CDW/MFC-L3765CDW/MFC-L3780CDW/MFC-L8395CDW.