Icon Drum Units are designed to give outstanding performance with your laser printer, from the first page to the last. They offer outstanding quality and print professional looking documents and photos at an economical value per page. Quick and simple to replace, they are a staple for any office. Pack of 4 drum units, includes Black, Cyan, Magenta and Yellow. Prints up to 18,000 pages. Compatible with Brother DCPL3551CDW, HLL3210CW, HLL3230CDW, MFCL3710CW and MFCL3770CDW laser printers.