[1/8in BSP Female Thread] This filter has a 1/8in BSP female thread that attaches to the airbrush and a 1/8in BSP male thread that connects to the hose. [Good Performance] This new innovative pistol-grip type inline moisture filter can provide a clean and dry air supply. [Feature] The 5 micron filter element helps separate moisture. You can then easily remove moisture build-up by pressing the spring-loaded release valve. Screws directly onto your airbrush. [Application] The water trap is ideal for protecting your airbrush and airbrushing projects from moisture damage! It is suitable for all 1/8in BSP threaded airbrushes. [Convenient] The transparent filter bowl allows visual inspection of accumulated moisture without removing the filter from the airbrush, which is convenient to use.