Genuine OKI 46857508 black imaging drum units are the best way of running your colour laser printer, especially when used in conjunction with original toner cartridges.Capable of processing the black toner powder for an estimated 30,000 prints, this OKI 46857508 rarely needs changing. As an essential component of the OKI C824 (and all of the other printers listed as compatible) the 46857508 black image drum is highly recommended, whenever possible.With unbeatable reliability and a relatively low cost per page, the OKI 46857508 black drum unit is definitely worth considering.