Rayson CR12100M Plastic Binding Combs 12in 21Ring 90Sheet Capacity Colorful Comb Binding Spines Max Binding A4 Size Paper 83117 Box of 100

The 21 hole comb binding ring fits A4 sized paper 83 x 117inches which is not a standard US letter paper size 85 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 90 Spine Diameter 12 Number of Rings 21 length 118inches 30cm Get a professional edge QuantityUnit 100Box Available in a variety of sizes and colors to bind 290 page documents 3mm margin for binding 290 sheets max binding thickness 95mm037in 6mm margin for binding 60 sheets max binding thickness 8mm031in Designed for a variety binding of paper size Perfect for internal reports and functional documents