Jacks can be rebuilt unless there is scoring in the bore. Typically it's just a matter of replacing the o-rings.Thank you all for the replies. I do have and use a good set of jack stands. Never get under the vehicle without them. I have a decent bottle jack I carry in my van for flat tires but I need something better for maintenance on the cars, mowers, etc. I am going today and look at the HF jacks in person. The WM one I bought a few years ago failed out of the box. The replacement lasted about 6 months and started leaking and would no longer lift. Thanks again.