***You can NOT successfully refill the #28 OR #29 cartrdiges UNLESS you have an "A" after the cartridge number***
Uses Lexmark 18C1528 (#28a), 18C0032 (#32), or 18C0034 (#34) Black and Lexmark 18C1529 (#29a), 18C0033 (#33) or 18C0035 (#35) Color Cartridges.