The shower arm has a simple and unique look that adds beauty to your bathroom and creates a modern feel. The shower arm is made of 304 stainless steel, featuring rust and corrosion resistance as well as exceptional sturdiness and durability. The shower arm features standard U.S. 1/2 NPT tapered threads and is compatible with most universal rain shower heads. Easy Installation: The shower head extension arm installs with a simple twist – no tools, no plumber required, and it takes only minutes.