1、1L LARGE CAPACITY: Oxygen cylinder is suitable for outdoor diving activities, 1L large capacity design, provides long lasting oxygen supply and longer underwater activity time. 2、LIGHTWEIGHT AND PORTABLE: Scuba tank is designed to be compact and lightweight, easy to carry, convenient for diving and snorkeling enthusiasts to use. 3、PROFESSIONAL DESIGN: Scuba oxygen cylinder is strictly tested to meet the diving standards to ensure safety and reliability, and to ensure that divers can breathe freely. 4、PREMIUM MATERIAL: This underwater oxygen cylinder is made of premium aviation aluminum material, antioxidant, rust resistant, durable and reliable, to ensure the effect of long time use. 5、MULTIFUNCTIONAL: It can be used as a scuba backup oxygen cylinder to provide extra oxygen support. With pressure relief valve and breathing valve, safer to use. Item Type: Scuba Tank Material: Aviation Aluminum, Silicone, Stainless Steel Capacity: 1L Medium Pressure Hose Connector Type: 3/8 24UNF Cylinder Body Connector Type: M18x1.5MM Maximum Pressure: 3000PSI, 200BAR, 20MPA 1 x Scuba Tank 1 x Primary Pressure Relief Valve 1 x Medium Pressure Hose 1 x Secondary Breathing Valve 2 x Rubber Ring 1 x Wrench 1 x User Manual