Been wanting to try one of these, for a while.
I own and operate a just brakes only shop.
After I assembled the jack, I placed it under a BMW 750. This is a fairly heavy vehicle.
Hooked up the air line, turned the valve. It raised the entire front end of this vehicle in just 4-5 seconds. Lifted it perfectly to place safety jacks.
I was very impressed.
Definitely recommend this product.