As a scientist, I need tools that are reliable and efficient for my experiments. As a result of my tests, I determined that YIHUA's Industrial Power & Hand Tools are the perfect fit. The Lead-free feature is incredibly important, and it has been certified by numerous organizations. I appreciate how long-lasting the tools are, and they have lasted for years without replacement. On the downside, they are a bit pricier than other tools on the market. Nonetheless, the superior performance of these tools makes them worth the investment.