I found this jack at a yard sale, I am not sure what it was used for but knew what I could use it for. All I had to do is mount my drill and weld plates on the bottom. The extra plate is to gain a little hight. You just put one tack on the center of the bottom plate and drill away. When you are done just pull forward and break the tack. I would think that with all the people on this site that they could come up with something that would work just as good if not better. Attached Images