Coil hose made is USA is superior to imported coil hoses. Rated for high pressure and durability. Brass swivel ends on both ends of the hose. Standard 1/4" NPT threads. Narrow hose increases strength and reduces waste when using Nitrogen. Short length hose recommended when your inflation source is close to your work or is portable and is usually moved to your work. Great for Nitrogen and small portable Air Compressors. Vibraseal coated threads, no thread tape or sealant needed!