Larry,
That Handy is made in USA in Iowa and Real rugged.I had mine on an un-even concrete floor for a few years w/ no issues,even when a 1000 lb. Goldwing was almost tipping over as the lift lowered and I forgot that I had it tied to a rafter on one handlebar for some work on the front end..
(I saved it w/o getting crushed in the process but it was close)
I saved the bike and it wasn't touched and didn't fall but the lift had a slight bend in the frame from that time on.
I ended up selling that one to the local 'high times' Harley repairman,no sweat.
They make accessories for it so you can work on ATV's and extenders so you can put the long cruiser style & Valkyries up there too w/ a good quality front wheel vise that works w/ sportbike front rotors;you should squirt a little light oil into the air cylinder(which will work even w/ a low cfm/small volume tank compressor)once a month to keep the seal-ring pliable and maintained.