What's in the box?Compatible Drum Unit for DR720,1-Pack(Black). What printer model is compatible with? hl-5440D / hl-5450DN / hl-5470DW/DWT / hl-6180DW/DWT Printer DCP-8110DN / DCP-8150DN / DCP-8155DN / DCP-8510DN Printer MFC-8710DW / MFC-8810DW / MFC-8910DW / MFC-8950DW/DWT Printer Why do you choose our products? ?Our products can provide you with reliable quality assurance, so that you can use easily and secure. ?Helps reduce your printing costs,and providing high-value option for high-volume printing. ?Provide after- service for every customer and ensure that the after- service is worry-free. Our quality assurance: •Tested with All compatible printers and easy installation and operation. •Advanced production technology ensures clear and high quality images. Applicable scene:home, company, school and other scenarios.