I have two four post, drive on, type lifts, with pneumatic center jacks in them, in my garage at home, and two of the same, in my climate controlled storage unit. I am the only one, who will operate them though. Unless it is a trusted individual, whom I know is experienced with them, and knows how to use it correctly. They need to know the important things, like after they raise the vehicle, to let the lift down to rest, on the locks, and not leave stress, on the mechanical components. Things along those lines..No one, other than my brothers have ever touched them aside form myself though, and they rarely ever need to use them.

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