... 3)Can do OEM Stainless Steel Flexible Corrugated Hose for Gas Appliance Specifications:1. Available Diameter:ID1/2" OD5/8 ... factory leak tested.Features: 1. Connectors for indoor and outdoor gas piping; 2. High flexibility, withstands corrosion, durable, reliable, safe ... and won't leak gas if installed incorrectly; 5. For gas mediums such as city gas, petroleum liquefied gas, natural gas, oil, water.