The jack is very sturdy, it has nothing to do with the ones that come with cars from the factory, but it has a major drawback: it requires a lot of strength to operate it. The reason is that the crank handle is very small, both in length and leverage, and the trapezoidal thread is thick—good so it doesn’t wear out, but it creates a big problem because it takes a lot of force to lift and use it. It rises very quickly with a lot of force; it should work more smoothly, rise more smoothly with more turns and less force. I was disappointed because it’s a very good brand—I have bought other products from them—but this particular one is very difficult to use. I can’t operate it; imagine if someone older or a woman without muscle strength tried. I do not recommend it. I am surprised by a review that says it works very smoothly and doesn’t require strength. It’s best to try it and then have an opinion, because that’s what I saw and why I chose it, but it was completely wrong!!!!!