With our 3-ring half size binder mechanisms, you can quickly and conveniently bind half sheet letter size pages that measure 5.5 inches wide and 8.5 inches high. Although that is the traditional size used, there really isn't a width limitation, since these are loose binding spines that don't limit you in that way. The spacing of the rings is standard for mini documents of this size, documents, measuring 2-3/4 inches between the rings for easy compatibility. Use ring binder spines as a way to securely bind loose, hole-punched pages, or as a unique way to create swatch books and custom ring binders. You can pair with our binder rivets and rivet setter tool to bind the ring binder hardware onto a custom chip board sheet.
Three ring mini metal binder spines are available with a 1/2, 3/4, 1, 1.5, or 2 inch round ring sizes. They have boosters on the ends to make for easy opening of the rings without pulling them and risking damaging their clasp integrity. You can buy half size 3-ring binder mechanisms online for many different purposes; they are popular for church directories, mini scrap books, swatch displays, custom mini ring binders, and much more.