Set of 6 books. You might not notice unless you look closely, but there are two types of binders with slight specification changes. Two have thin lettering on the spine and hook-shaped metal fittings (see photo 2). Four have thick lettering on the spine and metal fittings that are not hook-shaped (see photo 3). The damage isn't very noticeable, but there are some marks that might bother some people, so I've included them in photo 4. They're on the third book from the left in the group photo, and you probably won't notice them from a distance. There are some marks on the bottom edges from bumping against bookshelves, so I've included a photo (photo 5) to show the condition. Please take a look. It's a hassle to carry these home if you buy them at the classroom, so please take advantage of this. I will send them with a prayer for your success to those who purchase them!