The 21 hole comb binding ring fits A4 sized paper (8.3 x 11.7inches), which is not a standard U.S letter paper size (8.5 x 11inches). Binding letter size need to use the scissor to cut off two rings. The picture shows the difference between A4 and letter size paper.
Sheet Capacity: 55; Spine Diameter: 3/8"; Number of Rings: 21, length: 11.8inches/ 30cm.
Get a professional edge! Quantity/Unit - 100/Box
Available in a variety of sizes and colors to bind 2-55 page documents. 3mm margin for binding 2-55 sheets ( max binding thickness: 0.24in/ 6mm ) , 6mm margin for binding 25 sheets ( max binding thickness: 0.12in/ 3mm )
Designed for a variety binding of paper size. Perfect for internal reports and functional documents.
