Very simple and "coarse" knitted device. Very large holes. No stop rail! The sheets must be folded in half. The center marker is hard to reconcile with the convolution in accordance. Any normal Bürolocher is compared to a well-developed "high-end device." But as long as there is nothing else on the market .......... !! Why only produces none of the major office supplies manufacturer with a normal punch - in the present state of the art - for DINA5 with 4 holes for a ring binder with 4 rings or for scheduler? The demand is there, as the other reviews show.