25 Foot Red Gas/Air Hose, 5/16 inch ID and 9/16 inch OD by Kegconnection This 25 foot red gas/air hose has a 5/16 inch inside diameter and a 9/16 inch outside diameter This gas/air hose is American made; dual-layered; tasteless; and odorless for superior CO2 or nitrogen supply Commercial quality and twice the thickness of other hoses in the market Assembled in the USA Shipping rate is for the Continental US ONLY