Rohl 1455/20PN 20-Inch Brass 1-Inch Diameter 1/2-Inch Male by 1/2-Inch Male Npt Michael Berman Wall Mounted Shower Arm, Polished Nickel Size: 20-Inch Shown here with rohl showerhead, not included Brass construction Sliding escutcheon Modern style escutcheon available, order ROGSCO17