Do it Wiser Compatible Drum Imagine Unit DR720 for Brother DCP-8110DN DCP-8150DN DCP-8155DN HL 5440D HL-5450DN HL-5470DW HL-6180DW MFC-8510DN MFC-8710DW MFC-8910DW - Yield 30,000 Pages Drum yield 30,000 pages at 5% coverage Compatible Toner Cartridge with Brother DCP-8110DN DCP-8150DN DCP-8155DN HL 5440D HL-5450DN HL-5470DW HL-6180DW MFC-8510DN MFC-8710DW MFC-8910DW MFC-8950DW. OEM number DR720 Do it Wiser &reg; Smart Toner Cartridges are covered by 1 year warranty against defects 30 days unconditional money back guarantee and free no hassle returns. We will refund your payment after receiving your returned package. Shipping charges are not refundable. Cartridges certified to work | ISO 9001 quality assurance | ISO 14001 environmental management | RoHS Lead Free