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This type of lift, similar to an NRC is used by regular trucks with a fifth wheel to tow other trucks etc. The lift will raise and lower, with the hydraulic ram moving with it, as well as the long support piece that ties the lift to the unit itself. The jack stand legs will also move up and down. The wheels have some suspension in them, and are low profile type. If you have real rubber ones, of course replace, but I wanted to make sure all the pieces for completion were there. Also, please if possible, replace all the pins with stronger material, as 3D materials are very delicate. Should there be a question or issue, contact me via the designer link or direct via email to firstname.lastname@example.org