Male thread bottom provides connection. Features a large easy to read l, measure air pressure 0-170 (0 - 12 ). Our product design is unique, not only beautiful but also practical. Product Name: Compressor Gauge Type l Type Pressure 0 ~ 170 , 0 ~ 12Bar Thread meter 9mm/ 0.35"(1/8"PT) QUALITY GUARANTEE: Best quality. Our Brand is dedicated to provide high standard products，we have confidence in our products and provide after sale support,if you have products quality issues, please contact us.