Three days after my order, the offer price by 6 Euro was higher (lucky), while the same product from Amazon for 9 euros to order less parallel was (bad luck). Actually, we all know by now that the words "professional" does not mean anything, but a tool made of aluminum is certainly more robust than the alternative offers from plastic. However, the aluminum profile alone does not a professional tool. The most important criterion is the quality of the intended function: namely express pins. And there bothers me a lot: The spindle has game, the ejector pins are "smooth as silk" (non-hardened) and even a slight tilt of the bracelet, the pin stuck when turning out of the spindle in the bracelet. Actually, I could have left it at my existing plastic tool. Conclusion: Probably you have to be professional in order to work professionally with this tool can.