Ring binders punched pieces of paper. They are folders held by means of clamps running through the holes in the paper. Spring-loaded, circular and latching systems are basic assemblies of a ring binder.<br>If you have binder covers, you just need to add note paper or change note paper. Don’t you think it is an economical way? Ring binders in the fashion of a hardback book are produced in many styles and in vary wide materials. Some vinyl binders have a clear pocket on the outside for cover pages, and many have pockets in the inner cover for loose papers, business cards, compact discs, etc. There are also zipper binders, which zip the binder up and keep papers from falling out. We are looking forward your favor!