This is a set of four Kobe Note math workbooks: two for 3rd and 4th grade, and two for 5th and 6th grade. They are listed as "like new" because they are unused, brand new items that were kept as spares but never used. Please check photos 5 and 6 for any concerns regarding the covers. Please refrain from purchasing if you are concerned, as these are items stored by an individual.