I was very disappointed with this product when I opened the shipping box on Amazon. Unit arrived assembled in universal packaging with no instructions, tape, quick connectors, core tools or valve caps. It seemed solid enough and as I was desperate for a beefed up caliber for my RV tires I was willing to overlook the lack of accessories. haven't tried it yet. Leaks in all fittings. Again, I assumed it had been used and returned, so I decided to salvage it before finally reconfiguring it. After removing (my tape) and re-taping, I was able to stop the leaks in the fittings only to find a fatal leak on the metal housing of the inflation button. I might have a blemish right now but didn't want to risk it so I just bought a Vondior sensor with similar accessories as it seems sturdy too. I will check after I receive it.