The Imaging Drum Kit from Dell is specifically designed for use with Dell Laser Printer 1720/1720dn. The Imaging Drum Kit applies toner to the page. It offers a usable life of up to 30000 page impressions. This product has been tested and validated on Dell systems. It is supported by Dell Technical Support when used with a Dell system. - Consumable Type : Drum Kit - Printing Technology : Laser - Duty Cycle : Up to 30000 pagesCompatible Printers: Dell 1720, Dell 1720 dn, Dell 1720 n, Dell 1720 Series