That failed bolt is just the first problem you will likely have with that lift. Watch for cracks around the welds. The hydraulics won't last long either, so don't rely on it to support the load.
I concur with swall. The depression on the thread-side fracture face closely matches the bolt diameter, which was my first clue. The longitudinal trimming
marks on the side of the hex head don't inspire confidence either.
I also concur with comments about Harbor Freight. To call their tools Chinese junk gives Chinese junk a bad name. I once returned a small belt sander after seeing how appallingly unsafe it was. I didn't hang around long enough to insist on a full refund, but I won't be going back there soon.
"If you don't have time to do the job right the first time, when are you going to find time to repair it?"
