Feature: 1. PREMIUM MATERIALS: Made of premium stainless steel and aluminum alloy materials, sturdy and durable, with high reliability to ensure long term stability in use. 2. UNIVERSAL INTERFACE: The adapter head interface is universal for all 8mm inflatable interfaces, convenient and practical, so users don't need to worry about interface mismatch. 3. ACCURATE PROCESSING: Accurate processing technology is adopted to ensure the stability and safety of gas transmission. Users can rest assured that the adapter can be used for diving equipment operation. 4. COMPACT, PORTABLE: The scuba tank refill adapter is compact and small, easy to carry and operate, which makes it ideal for diving enthusiasts to use anytime and anywhere. 5. SIMPLE AND EASY TO USE: It is easy to operate and makes diving simple, users don't need to carry big bulky scuba tanks, enhancing the convenience of diving experience. Specification: Item Type: Scuba Tank Refill Adapter Material: Stainless Steel, Aluminum Alloy Weight: Approx. 252g / 8.9oz. Package List: 1 x Scuba Tank Refill Adapter