Are you having trouble finding a fitting that fits the hose for the airbrush? If that's the problem try an art supply shop or a craft store(wherever sells your brand of airbrush). Most of the home compressors that I've seen are 1/4" NPT but some airbrushes use machine threads(mine was 10-32). If you know the thread size, you can order the fitting from McMaster/Carr(or any tool supply house).
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