Love the notes but usage requires a double pair which means they're great for paperback books-of which I have very few. Need a sturdier construction.Not very heavy duty-but can hold up a few books-with just one book end. Cute design.Originally got a couple sets to use on bookshelves in my music room. Seemed to meet the height requirements. However, most music books are fairly heavy and these needed help holding up any books. Doubling them up would work, but I can use them for regular books and have them employed as such.They hold a small amount of heavy spiral books but I am not sure they would be able to hold a large amount of books as they are not HEAVY.If the books are light all hard back they would probably do a good job.Just what I was looking for. The design is a little like a musical G clef--perfect for the songbooks on top of my piano!These bookends do the job for which I purchased them. However, I wish they had a heavier weight. They looked cute and hold up the DVDs like I wanted. I would just prefer heavier bookends that are a little more sturdy.I was looking for bookends to display my "A Dance to the Music of Time" movements 1, 2, 3, & 4 books, and not only is it a perfect fit in size, but also in highlighting the series title theme. These bookends are made with quality material and workmanship; they also fulfilled what I was looking for, perfectly.this is an attractive design but they are not really heavy duty, more medium duty. I bought these to replace a shorter bookend, and this has more flexibility between the two sides of the bookend. therefore I dropped the rating by one star.I bought 6 sets; one per bookcase shelf.I wish I could've gotten them in other colors, but red was too expensive and far away shipping wise, so I settled for the classic and tasteful black, but it's just a little boring.All good; I'll just let the books pop behind these awesome bookends...A lot thinner than we expected. Description said they were heavy duty so we bought them for a record collection. It be afraid to try and push on the records in fear of bending theseHeavy and sturdy enough to hold any sized book.It works as supposed to.So beautiful!