While testing or comparing airbrushes, I may sometimes have upward of a dozen out at one time. Even when they are not out, I run into issues with where to put them, and how to store and display what I have... I have "some"... So, I started working on machining a few pieces that may help with my needs. The "system" will center around a pillar, or socket, that is machined to fit the OD of a quick connect fitting. I use an internal O-ring to hold the brush securely, and have sizes for all the brushes that I have - Standard 1/8" like Iwata, Grex, Olympos, etc., a size for Paasche, a size for Badger QC's, and several odd ball sizes that I need for some of the older, or European stuff. The O-rings keep the finishes on everything safe and sound from marring, and are easily replaceable if worn or damaged. The pillar parts plug into a single unit base, or eventually a beam with perhaps a dozen or more sockets available. A few of these rack type systems should make it easy for me to get the brushes into a display cabinet and on shelves in some sort of order, keeping them neat and safe. Hope you like it!