Carpet Rod Tubing ONLY: Tarnish-resistant RSF protective finish on carpet rod tubing! Comes with protective RSF finish that lasts 20 to 40 times longer than standard lacquers! Made of 0.032 gauge solid brass tubing these 36 in. long hollow carpet rod tubes are 1/2 inch O.D. (Outer Diameter) and can easily be cut to measure with a hacksaw. Measures 3ft. long.