Amazon.com: greencycle (1 Drum + 1 Toner) High Yield Black Toner Cartridges & Drum Drum Unit Set Compatible for Brother TN580 TN650 DR520 use with DCP-8060 DCP-8065DN HL-5240 HL-5250 MFC-8870WN MFC-8480DN :
Drum Cartridge Unit DR-3125 Compatible For Brother HL 5240 DCP 8080 MFC 8460 Printer - Printer Point
Brother HL-5240 Drum Unit and Toner Cartridge Replacement - iFixit Repair Guide
Compatible For Brother DR520 Drum Unit HL-5240 HL-5250DN MFC-8460N Laser Printer | eBay
Drum Unit Dr-3100 for brother hl-5250dn, hl-5240, hl-5250, mfc-8860dn, dcp-8065dn profiline - AliExpress
Buy Compatible Brother HL-5240 Drum Unit | INKredible UK