This is a simple yet effective holder for the most common airbrush and airbrush compressors out there.The diameter for the attachement point to your compressor is 30,5 mm.
You can see the video about th eholder right here: https://youtu.be/S3uulnb_zt8
Please check the drawing for the most important measurements to check if the holder will fit to your airbrush and compressor.