MB Sturgis low pressure strip wound hose stays flexible in cold weather and will not kink or crush. This appliance connector meets or exceeds the temperature, pull, and crush requirements of the ANSI Z21.54 standard for portable appliance connectors. The hoses are permanently attached to the interlocking end fittings and the metal core is certified to UL360. CA360 domestic brass is used on all parts. You can trust MB Sturgis brand gas hose connectors from GasHosesandRegulators.com.