1) Gas connectors get CSA approved for indoor and outdoor use 2) ... professional manufacturer for 10 years 3)Can do OEM Flexible Gas Stove ConnectorsAmazing Price,Good Quality And Quick Delivery Time!!! SPECIFICATIONSSIZEID 3 ... ,North American,Mid East,East Europe,West Europe. WORKING MEDIUMScity gas, petroleum liquefied gas, natural gas, oil, water.