The DR520 is one of several consumable goods that let you make the most of your Brother laser printer. Compatible with Brother models HL5200, HL5250DN, HL5240 and HL5280DW, the drum unit has an expected lifetime of 25,000 sheets. This name-brand drum unit is recommended for use with Brother Toner cartridges.What's in the Box: One DR520 drum unit, installation sheet END ASIN: B000BQO3FQ TITLE: Brother TN550 (3,500 YLD) Standard Yield Toner Cartridge AUTHOR:Amazon PRIORITY:7449 SOURCE:Amazon.com REVIEW: Compatible with Brother printer models HL5240, HL5250 series and HL5280DW, the TN550 toner cartridge easily pops into place and gets you back to printing in just minutes. The unit is a standard-yield cartridge, offering an average yield of 3,500 sheets based on 5% coverage of letter-sized pages. Fine toner particles produce rich black text with precision and clarity. Brother recommends this name-brand cartridge for use as a replacement cartridge.What's in the Box: One TN550 black toner cartridge