Marketing Information: Drum unit set is designed for use in Brother HL3140CW, HL3170CDW, MFC9130CW, MFC-9330CDW and MFC-9340CDW. The approximate yield is 15,000 A4 or letter-size, single-sided pages. Your printer will indicate when you need to replace them. The set includes four drums - one for each color: black, cyan, magenta and yellow.
