Stainless Steel: The Shower Arm is made of premium stainless steel, which is rust and corrosion resistant and is built to last. Connection Size: The wall-mounted shower arm measures 16" (L) x 1" (W) x 1" (H) and can be used with oversized rain shower heads from 8" to 16". G1/2" Universal Connection: The standard 1/2" connection of Shower Extension fits the shower head with 1/2" universal connection. Polished Chrome Finish: The multi-layer chrome finish of the Stainless Steel Shower Arm creates a shiny, highly reflective metallic gray appearance. Mounting Accessories: You will receive the Wall Mounted Shower Arm with flange and 16 meters of Teflon thread tape.