PREMIUM QULAITY OF LEXMARK GENUINE WASTE TONER UNIT TONER CARTRIDGES YIELDING 25,000 PAGES. COMPATIBLE PRINTERS (IF ANY): LEXMARK C734,LEXMARK C736,LEXMARK C746,LEXMARK C748,LEXMARK X734,LEXMARK X736,LEXMARK X738,LEXMARK X746,LEXMARK X748