This device with international patent number 5.386.638 is a truly impressive example of German fine mechanics: folded up, it is as compact as a disposable lighter; but, ready for action, it punches paper with the international two- or four-hole standards - executing the job with perfection for up to five sheets at a time. The folding and punching mechanisms function flawlessly. Made of matt stainless steel. 8 x 2 x 0.7 cm, weight 60 g.