Quality Material: The 360 Degree Scuba Diver Regulator Hose Swivel Adapter is made of 6061 aluminum, ensuring durability and longevity even in harsh underwater conditions Universal Joint Design: This Scuba Divers Regulator Fitting features a 360 degree universal joint, providing flexibility and ease of use during your underwater adventures Compact and Portable: With dimensions of 5.5x2.5cm, Used to connect the pressure relief valve and medium pressure tube, which can be rotated to facility flexible underwater activities 2nd Stage Regulator: Attach this unit between 2nd stage and low pressure hose. It allows freedom of movement between the 2nd stage and hose Package Includes: Each package comes with 1pc Scuba Regulator Fitting, making it a great addition to your diving gear collection Specification: Material: 6061?aluminum Size Chart: 5.5x2.5cm/2.17x0.98inch Package Includes: 1x?Scuba Divers Regulator Fitting Note: Please allow slightly errors due to manual measurement and different monitors.