The following cartridges (including all toner cartridges, drums, fusers & maintenance products) are guaranteed to work in the Oki B721DN printer.
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Hi there. Does this printer have a drum that needs to be replaced?
Hi, I believe that the drum is built into the toner cartridge for the Oki B721DN printer and so doesn't need to be purchased separately. The drum is the green part that looks like a roller (but remember not to touch that part of the cartridge as it can cause problems if it gets finger prints on it).