Spiral block - A4 square

Hard lazy boards protect 50 square leaves. 

The whole block is bound by a double ring spiral. Twin Wire Binding is the most perfect way of using a spiral in bookbinding. It makes it easy to rotate the leaves by up to 360 ° without moving the pages. The product remains open on the selected page and does not close spontaneously. Of course there is an easy secession of the sheet.

Size: A4 format