Thomas & Betts Ocal® PVC Coated conduit of trade size 1-Inch, features steel construction and hot-dipped galvanized finish. Conduit has inside diameter of 1.063-inches, outside diameter of 1.315-inches and wall thickness of 0.126-Inch. It features 40-mil PVC coating on the exterior and 2-mil blue urethane coating on the interior. This 9-ft 11-Inch conduit has threaded connection. Conduit is UL listed and CSA certified.