ring binder looseleaf binder leather binder RING BINDER Are you selling this ring binder? The ring binder is a form of mechanical binding similar to the ring notebook paper binder, only much larger. This type of binder has declined in popularity in recent times because it is prone to accidental opening, and, in addition, the bulk of the spine is large in proportion to the quantity of paper it can hold. Ring binders are folders in which punched pieces of paper may be held by means of clamps or rods running through holes in the paper. These retainers are usually spring-loaded, frequently but not invariably circular, and may or may not have additional latching systems. For the purpose of this Regulation, ring binder mechanisms shall consist of two rectangular steel sheets or wires with at least four half rings made of steel wire fixed on it and which are kept together by a steel cover. They can be opened either by pulling the half rings or with a small steel-made trigger mechanism fixed to the ring binder mechanism. The Ring Binder allows for totally modular presentations with the ability to add, and take out, or replace individual page-protectors. A device to be removably attached to an openable side of a ring binder, said ring binder having two covers and a spine with a paperlock secured to said spine, said device having sufficient length to protect material contained within said ring binder and said device having sufficient width to render said covers substantially flat.