After attempting to use smaller binding spines using this medium size one came as such a relief. They fit right into our binding machine and closed evenly every time. I was able to fit about 25 pages into one. The are pretty flexible even with paper in them but I guess that is to be expected. Overall I was happy with the product.
The binding spines are perfect for my projects. I make books for my grandchildren. I am a retired teacher and previously made classroom books from my students' work.
I used the combs to bind legal briefs. They worked very well and helped make the briefs look professionally bound. They were flexible enough to make installing them easy by sturdy enough to hold the bound material well.
Normally I would spend $30 for a box of 100 Binding Spines. I was happy to find the same amount at Staples for around 10 bucks! They are easy to use with my machine and it makes handouts programs and presentations look very professional!
I have used these to bind several 'books' I have made for my students with autism. They have proved very durable. Plus I can add to the 'books' as needed.