Be Green Ink Lexmark 50F1U00 (501U) Ultra High Yield Compatible Replacement Toner Cartridge (20,000 Pages Yield) for use in the following Lexmark Printers:Lexmark MS510, MS510dn, MS610, MS610de, MS610dn, MS610dte, MS610dtn Printers Your Happiness is 100% Guaranteed– No Hassle Refunds or Exchanges for 3 years. Feel At Easy Purchasing Lexmark 50F1U00 (501U) Ultra High Yield Compatible Replacement Toner Cartridge from Us Knowing We Will Always Take Care of You! Works In - Lexmark MS510, MS510dn, MS610, MS610de, MS610dn, MS610dte, MS610dtn Printers Print More Pages – Our Be Green Ink Lexmark 50F1U00 501U Ultra High Yield Compatible Replacement Toner Prints up to 20,000 Pages - 5% coverage (Letter/A4) What’s in The Box – Quantity: 1, Lexmark 50F1U00 (501U) Ultra High Yield Be Green Ink Replacement Toner with New Next Generation Technology for Unprecedented Quality. WE ARE HERE IN USA TO HELP YOU – If there is any issues whatsoever with your order, please contact Be Green Ink directly, we will solve your problem for you right away. You can click “Be Green Ink” below Price and then click “Ask a question” in the next page to write your messages; Or you can log into your amazon account and find your order details then contact us. Be Green Ink Lexmark 50F1U00 (501U) Ultra High Yield Compatible Replacement Toner Cartridge for use in Lexmark MS510, MS510dn, MS610, MS610de, MS610dn, MS610dte, and MS610dtn (20,000 Pages) are made in an ISO 9001/14001 certified manufacturing facility and are tested to ensure print quality. Be Green Ink Toner Cartridge are quality compatible cartridge that will perform at the same level as an original cartridge, but at a fraction of the cost.