I've had few different quick adapters, and this is by far the nicest made and tighted fitting one I have found. The build quality is very good, no flimsy like some some others, the lock engagement is secure and it has had not spillover/leak-by when in use.Yes it is a little bulky, so it isn't going to fit every tight-quarters application, but that is just the nature of automobile work, it is still a bit slimmer than other brands I have had.I do recommend!