Purchased two pair of these to make the transition between our driveway and the back yard. We park our popup camper there and these work great to tow it in and out (approx 3,000 lbs). The smell is really, really strong at first, but that wasn’t a problem for us since they were outside and away from our patio. Huge improvement over the wooden ramps I built when we first brought the camper home. Nice to have 4 total so I have more wiggle room when backing it in; previously I had to make sure everything was lined up perfectly. Now I just have to worry about getting through the gate.