The SKILCRAFT brand offers incomparable quality and performance, a broad product line and significant cost savings. SKILCRAFT imaging supplies are manufactured in ISO 9001:2000-certified facilities and are designed, engineered and produced to be a true alternative to the OEM. The entire SKILCRAFT line is 100% guaranteed. Through ISO 14001 certification and SFI (Sustainable Forestry Initiative) certification, SKILCRAFT helps to protect the environment by keeping used cartridges and cartridge components out of landfills. SKILCRAFT products are packaged by American's with disabilities under the federal government's ABILITYONE Program. This toner cartridge is compatible with Lexmark T640, T640DN, T640DTN, T640N, T640TN, T642, T642DTN, T642N, T642TN, T644, T644DTN, T644N, T644TN, X642E, X644E, X646E, X646DTE, X646EF. It yields 21000 pages at 5% coverage. Device Types: Laser Printer; Color(s): Black; Page-Yield: 21000; Supply Type: Toner.