Feature 1Aluminium Alloy: This diving tank refill adapter adopts premium aluminium alloy and rubber, which is rustproof and durable. 2Gauge and Hose: This aluminium alloy refill adapter is equipped with high pressure gauge and hose. 3Easy Operation: This scuba yolk fill station can be easily operated, making the diving easy, and you don't have to carry large scuba. 4Portable Size: This scuba tank fill station is small in size and light in weight, which is easy to carry. 5Air Filling: Filling compressed air to your small air tanks and paintball tanks from a larger cylinder.SpecificationItem Type: Diving Tank Refill AdapterMaterial: Aluminium Alloy, RubberProduct Color: BlackProduct Size: Approx. 63.5cm / 25in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Diving Tank Refill AdapterNote1. For manual measurement, please allow 1 to 3mm error. Thank you very much!2. Display calibration is inconsistent, and the colors of the items displayed in the photos may be slightly different from the actual objects.