works well, at first the air pump didn't work, after many emails i was instructed to open the unit myself & see if the power lead to pump switch was connected, this implied there has been a few with this factory fault, i did & it was the problem, i was assured my warranty won't be affected, was offered a small $ refund. worked well on an SUV, pays to make a wooden base place at least 50mm thick for soft ground, i don't believe it's a 5T lift, more like 2T.