The High Capacity Black 'Use and Return' Toner Cartridge from Dell is designed to work with the Dell Laser Printer 1720/1720dn. It produces high resolution printouts with impressively sharp images and text. This black cartridge features a yield of up to 6000 pages. Toner yields based on printing pages with 5% coverage in accordance with ISO/IEC 19752 testing methodology. Yields vary with usage and environmental conditions.