the use of brother genuine replacement ink bottles like the bt6000bk not only produces sharp, high-quality printouts with no streaking or smudging - it also lets you save money, time and paper due to less downtime or repairs. the brother bt6000bk black ink bottle is for use with brother printers with ink tank system. this refillable ink bottle system is intelligently engineered to work in seamless unison without compromising the quality of the print. this ink bottle is for use with the following brother refillable ink tank printers and all-in-ones: dcp-t300, dcp-t500w, dcp-t700w, mfc-t800w.brother genuine ink bottles: brother bt6000bk is a genuine brother ink bottle that produces high quality, inkjet prints you can depend onyields up to 6,000 pages: this replacement standard yield black ink bottle can print approximately 6,000 pageslower your cost per print: save more with every print with brother?s standard yield ink bottlesfor use with brother printers: dcp-t300, dcp-t500w, dcp-t700w, mfc-t800