Similar kits can be purchased in the US for 200-300 dollars, so one should not expect too much from a cheap product. I was able to pull my vibration problems, but after one use you can already see clear signs of wear on the threads of the bolt and the black even though I had smeared it with engine oil. I think a lot more than 5-10 times, this tool will not be used, but in my private use in the hobby workshop that is sufficient.
