Get great results every time from Hewlett-Packard's advanced toner formula, which features micro-sized particles that produce sharp text, smooth grayscales and deep blacks. The consistent particle size enables accurate placement while maximizing efficiency. Receive alerts when a print cartridge is running low, monitor its remaining life, and enjoy convenient online ordering or check stock and prices near you with HP SureSupply. Designed for use with HP LaserJet 4250 and 4350 Printers. Yields 10,000 pages.