Industry-leading low cost-per-page outputs. HP Ultraprecise Toner Cartridge with yellow toner for the Color LaserJet 4500/4550 Series printers. Maximum-capacity cartridge prints approximately 6,000 pages, based on 5% average coverage. Designed to work flawlessly with HP LaserJet Soft Gloss Paper and HP Color LaserJet Transparencies. Replacement frequency is about every 3-4 months, although usage rates will vary widely.