Bridgeport Combination coupling features die-cast zinc construction with ball burnished and mirror smooth finish. It measures 1-3/4-Inch x 1-3/4-Inch. Coupling has trade size of 3/4-Inch LT/EMT. It is suitable for connecting metallic or non-metallic Type B liquid-tight conduit to EMT. Combination coupling is UL listed, CSA certified and meets Federal specification/FB-1 NEMA standards.