PSI stands for pounds per square inch and for automotive airbrush art you need a compressor that has a psi of 55-65. Iwata is a great name brand to go with and they offer four compressors that will work for airbrushing automotives. Badger is another good name brand that you can go with. They offer several air compressors that will work when doing airbrush art on automobiles. Airbrush art has combined with the manicure to give women great opportunities to use their nails to show off great artwork. Airbrush art applied to the fingernails gives a great flare to a manicure. The designs are only limited to the stencils in which the artist can get their hands on and the artists imagination. In their starter kit they include 2 single action ABA airbrushes, 2 hoses, 9 glass airbrush bottles, a 2 outlet air manifold, 7 60ml airbrush tattoo ink in red, blue ,white, yellow violet, fuchsia and green and the kit includes a 120ml of black airbrush tattoo ink. The starter kit also give you 50 Vynalaser stencils that can be reused over and over again. This will give a little protection to the needle itself should the airbrush happen to fall. A damages needle can be disastrous to your ability to create high quality art, because if you are unable to straighten a bent needle back out or the needle should break completely you will not be able to finish your airbrush art until you can get a replacement. Real tattoos come with pain and is one of the reason that some people do not get them. So using airbrush art to create a tattoo gives people the chance to have realistic tattoos without the pain. Real tattoos are permanent and you are stuck with what ever you get. The only way to remove a tattoo that you do not like is to either do a cover up tattoo or go and have laser surgery to remove the tattoo. Beginners should really take the time to practice on how the trigger works so that they can perfect their ability to airbrush. Your airbrush will have a back lever as well that acts to shut off the air flow and paint flow when the trigger is released. If this should be come damaged then you could have serious problems with your airbrush.