These hoses are rated up to 350 psig working pressure with a 400 lbs. pull test rating. Each hose comes with 2 ends and fully crimped brass ferrules. Warning: An excess ow valve will not activate if there is a break or leak downstream of the valve that does not equal or exceed the closing ow of the valve or if the excess ow valve installed exceeds the ow capacity of the system. See the Excess Flow Warning page PG. 18 for more information regarding the use of excess ow devices.cULus listed for lengths up to 60 in.1/4 in. hose I.D.Use on 2 bottle systems with 2-stage automatic changeover regulators or regulators with T-checksFlexible thermoplastic UL and CGA approved hose. These products contain a chemical known to the state of California to cause cancer and birth defects or reproductive harm – https://www.p65warnings.ca.gov/chemicals/lead-and-lead-compounds