8mm (5/16 in.) Spiral Binding Coils for Reports, Presentations and Proposals | 4:1 Pitch | 12 in. Length | Black | 54 Sheets Binding Capacity | 100 Pack

Will work perfectly for making books

These spirals came perfectly packaged and are excellent quality. I purchased these several times and then completely happy especially with the quick delivery.

The machine does a great job punching - 20 page limit could be a little overstated. I use 20 lb paper and found 15 pages was easier - you can do 20 pages, but it seems to put more stress on the handle that i am comfortable with. The issue i have is with coils - they are easy enough to feed through, but after trimming - they are not secure and tend to wonder out of the punched holes. There was no documentation in the package so it could be an operator problem. Will try to find the procedure on line.

I have ordered these several times and in different sizes and have never been disappointed. I use them to bind our Prevent the Summer Slide materials that we send home with students at the end of the year, but have also used a larger version to bind student planners, handbooks, etc. They are easy to use and hold up well. Never disappointed.

I was worried I won't be able to use them with the Cinch binding machine. But well, they are springs. Great quality. You just need to stretch them a little to make them match the holes. You can't go wrong for the price.

I love this product as you see, but I am concerned about the cancer warning with this product. I use these coils a lot daily. I appreciate the notification, my question would be is the warning for daily handling or something released into the air continuously? Thanks

I was excited to find this many coils in one box for this price. I use them for my music degree, and they fit the use just fine. They aren't heavy duty or anything, but they certainly aren't crappy. No complaints whatsoever.

Does what it should. Holds up well, easily trimmed. Perfect size. Great price on Warehouse Deals!