Thankfully I didn’t get Harbor Freight jack stands. I think mine are the 3 ton craftsman model. Sorry to be a Debbie downer, but somebody had to say keeping a car in the air with only a hydraulic jack is lazy. Internal seals can fail, the release valve may not close all the way, or somebody can bump the jack. I’m a proponent of using the right tool for the job. I’ve never seen it so wholeheartedly suggested but this is an easier going forum than those I’m accustomed to.