Spiral stapler from Colorspan 355g/m2 - A4 This spiral stapler is made from Colorspan cardboard, a cardboard of unique quality, homogeneous and colored, without varnish and without the addition of plastic material. It is more durable than any other cardboard in daily use. The spiral binders are easy and safe to use. They allow safe filing of punched documents. With the printed cover you can mark the contents in the best possible way. For perforated A4 documents, spacing 80mm, for up to 300 sheets in A4 (80g) FSC certified. The spiral stapler is made in our factory in Germany.