The 1-1/2" Triclover (TC) weldless bulkhead flange allows you to add a TC port to any tank or kettle with absolutely no welding or soldering. Just drill a hole and tighten the locknut. Done! The flange measures 2" like all other 1.5" TC ferrules, and the overall length is just under 1". The ID is 1-3/8 just like standard 1.5" weld ferrules. The short length of this ferrule makes it possible to use ripple style heating elements and not have the foldback make contact with the ferrule.