GBC Binding Spines/Spirals/Coils, 1/2" Diameter, 85 Sheet Capacity, ProClick, Black, 25 Pack (2515660)

I use 24lb paper because it's a sturdy weight of paper. It holds up better and feels like a better quality than the so called 'normal' 20lb paper. Plus, I buy my paper at Costco in the 800 sheet package for the same price as most stores sell the 20lb paper of 500 sheets which is a standard ream size. With that being said, I bought 1/2" Pro Click bindings to use on the 65 sheet books I'm making. That size is supposed to handle 85 sheets of 20lb. I thought they would be big enough to hold the 65 sheets of 24lb paper, but they aren't. It's hard to turn the pages and you risk tearing the paper. So I then bought the 5/8" Pro Click bindings which is supposed to hold 110 sheets of 20lb. This is the size that works great, looks great and allows for page turning, and opening up the book flat for my 65 pages of 24lb papers. It would allow for a few more sheets if needed.

This is my favourite binding system for homeschooling! They work very well and I love that I can reuse them and add or remove pages as needed. I generally print all of our stuff with 24 to 28 lb paper and these work well.

GBC ProClick Spine are wonderful. They are simple to use and sturdy. I plan to purchase more of these when I need them.

Son buenísimos, se ponen y se quitan sin problema. Ojalá hubiera más tamaños. Muy recomendarles.

So easy to use and I love the fact that it can be easily opened if I need to remove or replace a page.