1. Stainless steel 304 material spring products are suitable for copper-free environments;2. It has multiple plant specifications and is widely used in various oxygen and oxygen systems;3. The better the circulation performance, the flow rate of the same capacity as the inner diameter of the oxygen pipe can be passed;4. It is convenient and quick to unplug and plug in the simple cover of the tube, and the quick connection part of the oxygen tube is safe, reliable and durable. 5. The snail rescue part has sealant, and the M5 metric screw has a sealing gasket to prevent leakage in the quick connection part of the snail rescue: 6. Nickel-plated copper can prevent corrosion, contact and pollution, and it is better to use abalone.