Well built and well packaged with good quality accessories. The valve for lowering needs a very short turn to open so the first time I used it the lowering started abruptly and fast. But the thing lowers somewhat lower and rises somewhat higher than advertised. And it can be adjusted very precisely. For me that is excellent as I use it to place various electrical woodworking tools in an opening in my workbench. For that purpose I bought wheels separately as I needed another type than the wheels that can be chosen on the Vevor website. I should have bought this thing years ago! Maybe you too