The product came assembled other than the handle, pressure gauge and hose however, all simple to fit. When I first used their was a little air leaking from the water separator, so this just needed a little tightening.All in all, good product.
Great little pump seems to be exactly the same as a previous more expensive pump that I had. Works preferably so far. It only has a quick connector do you may need some additional adapters.
VEVOR Customer 
