360 Degree Rotary Hose Adapter For Portable Second Stage Diving Machine Description: [Material]: This diving machine adapter is made of chrome-plated brass, which ensures durability and longevity even in harsh underwater conditions. [Size]: This compact, rotating diving adapter measuring 25 55 mm is easy to assemble and operate, without increasing the considerable weight of your diving equipment. [Compatibility]: Designed to fit all standard size second stage diving machines, making it a versatile addition to your gear. [Functionality]: The ability to rotate 360 provides a more comfortable use of the second stage machine underwater, allowing flexible positioning. [Application] Suitable for diving, diving, underwater, water sports, snorkeling, etc. Specification: Material: Brass Size Chart: 2,5 cm x 5,5 cm / 0,98 inch x 2,17 inch The package includes: 1 second stage adapter for diving