This showerarm includes a diverter that makes it easy to switch the water flow from showerhead to handshower or to run both at the same time. Kohler® Shower Arm, Deck/Bath Mount, For Use with: Kohler® Shower Head and Handshower, 1/2 in NPT, Brass, Vibrant® Brushed Nickel, 8-1/16 in L x 3-1/16 in W