E-Z Ink (TM) Compatible Yellow Drum Unit Replacement for Brother DR221CL (1 Yellow Drum Unit) Compatible with HL-3140CW HL-3170CDW MFC-9130CW MFC-9330CDW MFC-9340CDW Laser Printer Brand: E-Z ink Page Yield: 15,000 pages per drum unit All drum units are manufactured in an ISO 9001 certified facility All drum units are engineered to produce superb results All products covered by a 100% satisfaction guarantee and 1 year warranty