Yunsailing 150 Pack Plastic Binding Combs Plastic Binder Comb Ring 19 Ring Binding Spines Letter Size Spiral coils for Notebook Calendar(1/4 5/16 3/8 1/2 5/8 3/4 in,Multi Colors)

Tested out, and works on my IBICO vintage Binder machine and on paper booklets. Very pleased with size and color selection. You could probably cut them in half for smaller booklets like sewing machine manuals. Easy to use, and gives professional results. Absolutely recommend. By the way, a comb book binding machine should be in every home. If you buy a vintage one or manual one, it works so well and so solidly built. I have one from 1969 and it had some issues that I fixed and cleaned it. Back in the day it used to cost $3000 (which was $10K in today's currency) and I paid $50 for it online. It punches the paper, then you pull the lever the other way to stretch the comb spine spiral, insert booklet, and close lever and spirals. Done. So easy. Do your children's reports, your work presentations, kitchen manuals, recipe booklets, garage DIY tool manuals and warranties as one binder. Add a plastic top and bottom page and you have an easy to read manual that does not get torn up or stained.

They work great with my binder. A great value for the amount you get. No complaints here.

Good product

First, these work perfectly, have no problems with that. The way they're packaged is the problem. They literally bundle each size up with a piece of rope, no markings on anything as to size. They are put in the ropes with two mingled together, if you want one, you have to pull both out....then you can't get the other one back in. I'm going to have to figure out a way to separate these. I bought a similar variety set of these and each size came in it's own labeled bag. Much, much better!

Does the job. Lots of variety of sizes

I got these along with the binding machine. They were perfect. It had been 20yrs since I had done any binding and these were smooth and easy to use as well as gave my daughters homeschool curriculum a great finished look for her to be able to do her work without loosing any pages. The size assortment is great and takes care of just about everything you could need. They are easy to trim with a pair of scissors if you are binding on the small edge of the paper instead of long edge. They also stack well when you have several put together. I will definitely be buying these again when i run out.

Works great - will repurchase as the need arises.

It came packaged very well, easy to take out