The American Fittings STREMT125 1-1-4Liquidtight Combo Coupling is a set of 4 steel couplings designed for connecting EMT conduit to existing steel pipe. This combination coupling features a 1 1/4 inch rail height and is manufactured by American Fittings. The silver and green colored couplings are durable and reliable, making them ideal for industrial and commercial applications. With a unit length, height, and width of 7 inches each, these couplings provide a secure and efficient method for connecting electrical components in various systems.