Features: Make from high strength aluminum alloy, offering a balance of strength and lightness. Features a gauge for accurate pressure readings during refills. Equipped with 8mm/0.31inch fill nipple quick disconnects for swifts and secure Tanks connection. The diving refill adapter boasts a portable designs, ensuring easy installation and removal process. It is suitable for most standard diving valves, ensuring safety during use. Specifications: Materials: Aluminum alloys Styles: 2/1 Color: Red Color/Black Color/Gold Size: about 63.1x4.9x3cm/24.84x1.93x1.18inch Package Includes: 1Pc Scubas Tanks Refill Adapter note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.