This is not a professional tool. One can already see the price. Nevertheless, it's me so successfully managed to move the camera in my iPhone and all assemble beautiful again. And I'm no expert and have done so little for the first time. The tool has not suffered big, I could probably action again repeat it. Still, I can not imagine what other reviewers write here that in some situations the material is overwhelmed; safe with frequent use. But for a single repair attempt in the amateur workshop I would recommend this set. If it does not work you can still go to the skilled worker and has not lost much. Therefore, 4 stars, for value for money. Without considering the price I would give only 2 stars for the tool.