Purchased one of these jacks for the shop. Works well !!! Thickness of the metal is a little whimpy, but seems to hold up. Air coupler it came with was different than the ones we use in our shop so i had to change that out.I don't know what size wrenches that is assembled with. but nothing i had would fit ?? We do alot of work on low cars (street rods) so this jack works great with getting cars on our rack. For the $$$, a great jack !!!