Officom 25pcs A4 Plastic Ring Binder Comb 21 Holes PVC Black [8mm/10mm/12mm/14mm]

•This rigid plastic shape forms the book's spine and would resemble a hair comb if it were not formed into a cylinder, hence the name Comb Binding.

•Each tine or "tooth" along the comb binding element is pre-formed into a closed ring shape. Each ring-shaped tine contains tension. When these tines are spread apart and then released, the tension closes them back into a circular shape.

•Plastic comb binding is a traditional, economical, and simple binding method. Made of PVC Plastic, the combs consist of a spine of round rings that spread open for sheet inserting. The rings fit into rectangular holes along a binding edge. Plastic GBC Comb Binding is prefect for those who will need to edit their documents, as the bindings can be easily opened and closed.

•Widely available

•Inexpensive

•Printing of spine for customization

•Can add or remove pages

•Can reuse spine after removed from book

•Can be cut in house to any length

•Facing pages align

•Wide range of diameters

•Place the comb on the comb binder so that it open

•Place the solid spine of the comb binding on the opener from the back side so the loops are in between the fingers of the comb binding opener

•Make sure that the comb binding will open up rather than down