From the Manufacturer
For power and lighting circuits, branch circuit wiring, office partition furniture, voice, data and signal transmissions, lighting fixture whips, motor leads and video cables. Suitable for concealed, exposed or approved raceways with a smooth interior for easy wire pulling.
Flexible reduced wall steel conduit. Fits regular armored cable or flexible conduit connectors. Designed for electrical wiring where UL listing is required. Made from hot dipped galvanized steel with heavy zinc coating. Medium weight conduit. UL listed.