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Shower Curtain Rod with Concealed Mounting Flanges has rod fabricated of alloy 18-8 stainless steel, type 304, No20 gauge 1" dia. tubing. Exposed finish is satin and be protected during shipment with a plastic bag. Length is as specified. Concealed Mounting Flanges are chrome plated brass with a satin finish. Pair of flanges consists of a wall mounting lug and a locking sleeve. One sleeve has locking screw to prevent rod rotation. Mounting lugs are provided with (2) mounting holes to accept #10 round or pan head screws (furnished by others).