This jack was a great idea but did not work on my 1990 Airex 8 wheel motorhome. I even tried a 2x8 under the jack but it didn't raise the dual wheel/tires in front of it off the ground. The back of the camper has 6 wheels; 4 are in a row on the axis (double). Each side has 3 rear wheels; 2 side by side on an axle with 4 wheels and one (freewheel) wheel at the back on each side. I hit the jack at the (freewheel) wheel in the rearmost position (rear wheel) on the passenger side. The 2nd set of wheels in front didn't come off the ground even when using the 2x8 under the jack. I think it works on some vehicles or trailers, but not under the rear wheel on my A-class motorhome. The jack seems solid enough as it's metal, although care must be taken not to go too far (so I got in and out of the camper a few times checking how high/far it went ). The single rear (rear) tire on the passenger side seemed a little mangled (out of round) when jacked up, which made me wonder if it could damage the tire. Honestly, some vehicles might have a 5 star rating, although I don't have any testimonials on them. It would be very convenient to just drive over such a jack and you would not have to work with a car or any other jack. What I think happens on some vehicles like mine is that when the rear wheel is lifted, the linkage/support structure rotates instead of lifting the other wheels. from the UPS driver. UPS did not arrive the next business day as stated in the return instructions, nor the next day. So I had to call Revain customer service who made an appointment for me. The difficulty in getting a refund may be partly due to having to go through the UPS Ground.