I bought this to inflate tires on bikes without blowing too much air out of my regular bolt-on compressor. It does the job, but sometimes it takes a few tries to get it on the stalk. There is a silicone gasket inside the head that was initially cut into a few pieces when shooting but I'll just chalk it up as just getting used to the fit of my stems, but that also has a slight effect on the fit. on the chuck, which sometimes requires considerable effort. The hassle involved makes me think it has a pretty strong seal, so hopefully it won't come loose from the inner seal after a few uses while still being airtight.