I’m a teacher and I’m using this product (5/16 100 count) to make workbooks for my students (approximately 600 students). The product is easy to use and I love that my students will be able to lay the workbook flat. I give 4 stars instead of five due to the product having 4 burrs (sharp spots) on the spine. I’m guessing the product is molded in a tray of multiple spins and then cut apart leaving these burrs behind. If you’re binding a project for adults, it’s no big deal - they’ll see it and avoid it, but children are going to cut themselves unless you take a file or wire cutters to each spine. My school had 2 boxes of the 25 count and they didn’t have these burrs. So based off my experience, if you are looking to bind a small amount and/or don’t want the hassle of filing I would suggest buying the 25 count box. Other than the burr issue, this product is perfect for the job and MyBinding does a great job of getting them to you on time. I hope this review is helpful!!! Happy Binding!!!