Outer tube:stainless steel 304 or 316

Fitting:stainless steel or brass chorme plated nut

Screw thread:NPT,BSP

Outer diameter:16.5\21.5\26.5MM
Inner diameter :12.5\16.5\21.5MM
Nut size:F1/2"\F3/4"\F1"
Length is according to requirement
The hose can be extensible
Surfacing is cover the yellow PVC hose which have inflaming retarding effect.

OEM is available.

Usable range:uesed in natural gas!