A original black drum like this W850H22G produced by Lexmark handles the toner powder from the associated toner cartridge and help distribute it, where necessary, across the paper. Such an important job is best left to the original manufacturer of your Lexmark printer, so the genuine 0W850H22G is the ideal solution.Estimated to offer you an impressive 60,000 prints from this single unit, the original Lexmark W850H22G is a reasonably priced essential component for your printer. Whenever you buy a genuine Lexmark product like this W850H22G imaging drum unit, you can an unbeatable quality of manufacture.