Ensure that your HP Printers are working at optimal efficiency with the HP LaserJet 4250/4350 220v Q5422A Maintenance Kit. Featuring a maximum page yield of up to 225,000, this kit allows you to easily maintain the internal components of compatible LaserJet Printers, prolonging your machine's longevity and can be used with the HP LaserJet 4250 and 4350.