Kwik-Couple Rigid Conduit does not contain a listing for wet locations and has not been evaluated for Class I Division 1 locations. Manufactured from mild steel, Columbia-MBF Kwik-Couple Rigid Conduit is extremely resistant to damage from impact yet ductile to facilitate bending. The 3/4" taper NPT threads (ANSI B1.20.1) are full cut and hot galvanized after cutting.