Module construction 2 airbrush holder H&SH&S Airbrush Holder Expandable Module System H&S Airbrush Holder Expandable Module System designer shaped airbrush holder, the basic version version holds two airbrushes but can be expanded indefinitely with the Harder & Steenbeck Extension For Airbrush Holder Every module has it's own air supply for each airbrush These following H&S Airbrush Holder Expandable Module System hoses connect the holder to your airbrush via a quick release system. The