I have not had to use this puller yet, bought it for an unknown future need "to save my ass." I simply would not have bought the much more expensive Posi-Locs.
However, this is no Posi-Loc, but may work nearly as well. The fit and finish are okay, I hope the puller arms are good steel when I need them to be, never really know with Chinese tools, some are good, some not.
Posi-Locs have the engagement hooks on the arms machined, for positive engagement and reduced bulkiness, these Vevor copies are "as cast" which could hamper some pulling projects. I may take my angle grinder to them and finish the hooks similarly to Posi-Locs.
Overall, I'm happy to have a Posi-Loc style puller in my puller arsenal as I have had the need quite a few times... I hope these are up to the task.