I share Ollies experience total carp build quality very poor ours lasted a few months. Bough Snap ON ranging from 1.5 tonnes to 3 tonnes if they break Snap On replace them more expensive outlay but cheaper in the long run. A Jack is something you need to have full trust in not wonder if it will let you down (pardon the pun)
To be fair the one we had was used for lifting cars for tyre changes so was in constant use without stands. But it didn't stand up very well, the snap on replacement is still going strong.