I've broken these things so many times. I consciously searched for the most expensive self-powered pressure gauge that I could find. Via Air manufactures a variety of onboard air compressors for the 4x4 scene for Air Lockers and Airbag Hangers. I rolled the dice. Turned out to be a great buy. Looks very good together. It comes with an air cartridge already installed. The air hose clamp is excellent. Really grippy overloaded gloves so easy to wear. Minimal air loss when I remove it from the schrader valve. Something that could last a few years. I use it very often and it seems like it lasts. There is no other brand with a dial and assembly like this. C is garbage. Have gone through several of these. Get this. Costs money.