Lexmark E250X22G Compatible Drum for the E250D, E250DN, E350D, E352DN, & E450 and the Dell 1720, Dell 1720n - 30000 pages at 5% coverage per page. Toner Refill Store offers a 100% Guarantee on all of its products. This item is 100% Guaranteed to meet or exceed current OEM standards and comes with a Lifetime Warranty