Hi I've noticed this item on EBay Germany (http://www.ebay.de/itm/UHRMACHER-WERKZEUGE-STERNKREUZ-GLASER-EINPRESSVORRICHTUNG-FUR-ARMBANDUHREN-/381390755107?hash=item58cca91523:g:9O4AAOSwd0BV7G7i). I've seen one or two of these for sale before and can't figure out how they are used. My best guess is that rather than press on the crystal to insert you place the appropriate die over it and press on that instead, but like I say it's just a guess and there is nothing to press with unless that small t