I bought my first one almost 50 years ago for my first 4X4. I got other peoples trucks back on the road, changed tires, lifted buildings and a bunch of other things. I lost it in a fire. I couldn't think of anything else for a job I had so I went looking for a new one. They are still around and still a bargain. I found an All Cast 5 foot tall one on Amazon for $99 Delivered Including Tax! This is for a 7,000 Pound Made In The USA Jack.
I used it yesterday, smooth as silk. We still make good stuff here!
The chinese copy is $20 cheaper, 18 inches shorter and not much of a bargain.