- Premium Quality Construction: Crafted from high-grade aluminum alloy and rubber, this diving bottle refill adapter is designed for durability and resistance to rust, ensuring long-lasting use in various environments. - Effortless Connection: The submersible valve features an 8mm standard female thread quick coupling plug paired with a 0.5m flexible spring hose. Enjoy seamless connections and disconnections in seconds, enhancing your efficiency during use. - Versatile Compatibility: This adapter is not only perfect for diving bottles but also compatible with PCP air rifles, allowing you to utilize compressed air from diving tanks. It's suitable for filling paintball and HPA CO2 tanks, making it a multifunctional tool for outdoor enthusiasts. - User-Friendly Design: Connecting any filling adapter to the air tool's plug connections is straightforward. The innovative design incorporates double O-rings, which significantly increase the service life of the adapter, providing you with reliable performance. - Practical Applications: 1. Use this adapter to refill your diving tank quickly before embarking on underwater adventures. 2. Easily connect it to your PCP air rifle at the shooting range for efficient air refills. 3. Perfect for paintball players to ensure your CO2 tanks are filled and ready for action. This diving bottle refill adapter combines quality, efficiency, and versatility to meet your air supply needs, making it an essential addition to your gear.