1/2 inch EMT set screw combination coupling to 3/8 inch AC/MC/MCIA and FMC. Mighty-Merge® transition fitting for use between 1/2 inch EMT to 3/8 inch FMC, metal clad and armored cable assemblies with O.D of 0.43 to 0.61 (14/2 to 10/3 within the specified ranges). AC/MC should be prepared to the desired length and fed through the fitting. AC/MC/MCIA and FMC should be inserted until the armor is visible in the sight hole at the center of the fitting. Use of Antishort bushings is required on AC/MC cable and recommended with FMC. Fitting unthreads from end of cable assembly and FMC. For dry locations only.