ORS3904 Features: * Non-interchangeable oxygen and fuel gas connectors * Instant closure on reverse flow check valves * Spring-loaded locking mechanism responds to fingertip action and achieves a gas-tight connection * Double seal socket connection on second seal * Material: Brass * Type: Quick Connect * Price is for 1 Each * Testing and approvals: * Exceed CGA flow specifications Construction: * Brass construction provides long service life