Caire(TM) 5,000 Pages Remanufacturered 50F1H00 Lexmark MS310d MS310dn, MS312dn, MS315dn, MS410d, MS410dn, MS415dn, MS510dn, MS610de, MS610dn, MS610dte, MS610dtn Toner Cartridge (MS 310: 5.0K) High Page Yield: Black 5,000 | Shelf Life: 24-36 Months Consistent Crisp output with Sharp Lines, Solid Shades, and Smooth Edges Built to flawlessly work and compete: 50F1H00 For use on MS310d MS310dn, MS312dn, MS315dn, MS410d, MS410dn, MS415dn, MS510dn, MS610de, MS610dn, MS610dte, & MS610dtn The use of our replacement toner does not void your printer's warranty Extended '2 Year 100% Quality Satisfaction' Guarantee