Features: Can connected with regulator long and short hose, and the male end of the long and short hose can rotate 360 degrees. Suitable for most 1nd stage head and long and short hose. High quality chrome plated brass material, safe to use, long service life. Professional manufacturing, fine workmanship, sturdy and durable. Small size and lightweight, easy to carry and store, convenient to use. Package Includes: 1 x Diving Adapter Specifications: Material:Copper High Pressure Size:Approx.3.1x2.75cm/1.22x1.08inches Low Pressure Size:Approx.2.85x2.9cm/1.12x1.14inches note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.