I have actually used that jack and found it to be much quicker and easier than a bottle or floor jack. You just wedge it against the axle you wish to raise and pull forward until it catches and pops the tire off the ground. (The pic. doesn't show it well, but it has a flat spot that levels against the ground pretty well.) Then you can make your repair, put it in reverse, and toss it back into your tow box, and you're off! It's one of those, "Man, I wish I'd thought of that!" ideas. IMHO