● The spine width expands according to the amount of documents, so it helps save space by not creating dead space within the file. ● The binding mechanism can be easily set and released with a one-touch operation. Product Specifications Size: B4-E Capacity: 1-100 Number of sheets: 1000 sheets External dimensions (height, width, spine width): 263・374・13～113 Number of holes: 2 holes Hole spacing: 80mm pitch Material: Cover: Colored paperboard (2 layers, mixed with recycled paper pulp) Product colors: Gray, Blue ● Number of holes / 2 holes ● Hole spacing / 80mm pitch ● Cover / Colored paperboard (2 layers, mixed with recycled paper pulp) ● Percentage of recycled materials / Cover: 72% recycled paper pulp content From the KOKUYO website. Used for binding cram school printouts. There is damage and dirt. Please refrain from purchasing if you are sensitive or seeking perfection.