The Imaging Drum Kit from Dell is specifically designed for use with Colour Laser Printer 3000cn/3010cn/3100cn, This kit includes an imaging drum and instructions on how to replace it, It applies toner to the page and offers a usable life of approximately 42 000 pages when printing 100% mono pages decreasing to 10 500 pages1 when printing 100% colour pages, Color: Drum Unit, Duty Cycle: Approximately 42 000 page impressions, SKU: SUPNET1641