Weberdisplays 6' Ft Long Braided Airbrush Hose with 1/8 inch to 1/8 inch BSP fittings and One 1/8" to 1/4" end Coupling Coupler Fitting For Air Brush 6 Ft Long Braided Airbrush Hose with Standard 1/8" BSP Female Fittings on Both Ends. Most airbrushes have 1/8" male threads. And one 1/8" BSP Male to 1/4" Female (match 1/4" NPT threads) Fitting. Most airbrush compressors have 1/4" or 1/8" air outlet. Can be used on most airbrush air compressor, like Iwata's. Please check your airbrush and compressor fitting before purchase.