Check the listing for details. Scubas Diving Regulator Connector Portable Second Stage Regulator Adapter. Condition: New, Made in China. Listed at 23.02 USD. Features: 360 degree scubas diving dive regulator adaptor. Make of Aviation Aluminum, enduring and corrosions resistant. Helps Prevent Second Stage Pulling From Mouth When Head Turn. Increased comfort of second stage regulator. The scubas diving regulator is easy to install and operate. Specifications: Component: Aviation Aluminum Size: about 5.5x2.5cm/2.17x0.98inch Pressure Reducing valves Interfaces: about 1.55cm/0.61inch mediums Pressure Tube Interfaces: about 1cm/0.39 Inch Rotation angles: 360 Degree Package Includes: 1pc Hose Adapter note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.