Master Airbrush Brand Airbrush Fitting Conversion Adapter for Paasche Airbrushes; Converts Paasche Size Threads to 1/8" BSP Size Threads; Hose Adapter Connector Master Airbrush Brand Airbrush Fitting Conversion Adapter for Paasche Airbrushes Converts Paasche airbrush male thread size to standard 1/8" BSP male thread size for easy connection to 1/8" BSP air hoses Paasche's airbrush thread size is proprietary to Paasche, but is approximately M7 1.0 mm size Adapter has 1/8" BSP male threads on the outside and Paasche size female threads on the inside The adapters 1/8" BSP hose thread size is the most common hose fitting size used for many popular airbrush brands like Master and Iwata