The HP 145X is a high-yield original LaserJet toner cartridge designed for efficient, high-volume printing in a professional environment. Utilizing JetIntelligence technology, this all-in-one unit integrates the imaging drum and black toner to ensure consistent print quality across its 3,800-page capacity, which helps you spend less time replacing supplies and more time on your work. This cartridge is specifically built for use with HP LaserJet Pro 3003dn, 3003dw, 3103fdn, and 3103fdw printers. Weighing 0.61 kg, it fits seamlessly into these machines to provide a reliable stream of crisp black documents for users who manage demanding printing workloads.