Product Includes three compatible high yield toner cartridges (3-Pack, Black). Page Yield*: covers approx. 15000 pages per cartridges. *at 5% coverage (ISO/IEC standard) Compatible with printer models: Samsung SL printers, SL- M4020ND, and SL-M4070FR Professional compatible replacement manufactured by LD Products. Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.