Don't know how I lived without it
This thing is great, I would love to have a full sized shop lift but the quick jack does 95% of a full size lift and it works in my standard size garage. I have the 5000 lb lift and doing oil changes / exhaust work is no problem! It is built tough enough that you would need to do something very dumb to break it.
The only thing I would change is the wheels on the one end are useless because there is no handle on the other end. It would also be nice to have a welded on handle on the side of the unit for when you are pushing it under the car.
Again, this thing rocks, in less time than it takes to jack up one end of a car and put stands under it, I can have all 4 wheels off the ground and feel SAFE under the car. Best money I ever spent on a tool out in the shop.