The sharp AL-100DR Drum Black Compatible Drum Unit are replacement drum units that are similar to the original and meets our stringent quality standards. The factory replaces all worn parts including the OPC drum, rollers, toner, seal, and chips (when applicable). Our Compatible sharp AL-100DR Drum Black carries a 1-year warranty and ensures high quality prints every time. Each sharp AL-100DR Drum Black drum unit passes our rigorous post production inspections in real test printers before it is packaged. In addition to getting all the benefits of a genuine sharp AL-100DR Drum Black drum unit, you also get a price benefit when you buy the Compatible sharp AL-100DR Drum Black from InkjetSuperstore.com