Mini Scuba Tank, 0.5L Portable Diving Tank for Underwater Breathing, Reusable Lung Diving Cylinder up to 10 Minutes Dive Time, Emergency Rescue Pony Bottle with Refill Adapter for Snorkeling Short Dive Breathing Set High-Pressure Resistance Smooth & Reliable Easy Refilling Travel-Friendly & Portable Luminous Pressure Gauge Tank Wall Thickness: 0.2 in / 4 mm,Tank Thread: M18 x 1.5,Tank Capacity: 0.13 Gal / 0.5 L,Tank Mouthpiece Material: Silicone,Maximum Diving Depth: 16.4 ft / 5 m,Item Model Number: S300-3,Product Weight: 3.3 lbs / 1.5 kg,Maximum Tank Filling Pressure: 20 MPa,Tank Diameter x Height (Tank Only): Φ2.4 x 11.8 in / Φ60 x 300 mm,Tank Refill Port Size: 0.3 in / 8 mm Male Connector,Tank Adapter Size: 5.3 x 2.4 x 0.9 in / 135 x 60 x 23 mm,Tank Material: Aluminum