Product details:

This shower arm includes a diverter that makes it easy to switch the water flow between a showerhead and handshower. Diverter switches water between showerhead and handshower. For use with KOHLER showerheads and handshowers (sold separately). Brass construction. KOHLER finishes resist corrosion and tarnishing. Deck- or bath-mount installation. Includes flange. K-76334 Traditional flange and K-76335 Square flange also available (sold separately).