I had bought a similar product from China for about 12 euros. Because I started installing optical fibers and needed a good cutter to make clean cuts and angles in the channels, I decided to invest and bought this specific product. I can't believe what a terrible purchase I made. I wasted 125€. It breaks and destroys the channel wherever I cut it. The same thing happened with the 12 euro tool. It looks extremely high-quality and effective in the photos, but the result is tragic. It is not recommended even for simple household use. I wonder if they even tested it on a single channel before releasing it to the market.