Weberdisplays Two (2) X Quick Connection Connector Coupler with Air Flow Regulator 1/8" to 1/8" BSP Fittings for Fast Connecting Disconnecting Air Brush Airbrush and Hose Two quick coupler connectors both with air flow regulator. 1/8" BSP male (hose end) to 1/8" BSP female (airbrush end). For quick switching airbrushes. Most airbrushes and air hose have 1/8" fitting, such as Iwata's and Weberdisplays' airbrush and hose Please check your airbrush and hose fittings before purchase. (Airbrush and hose in picture are NOT included.)