Grohe - Rainshower 12" Ceiling Shower Arm with Flange and 1/2" Threaded Connection for Grohe Shower Heads

Kohler® - Shower Arm, Ceiling Mount, 12 in L, Matte Black

Kohler® - Shower Arm, Ceiling Mount, 12 in L, Polished Chrome

Delta - 14" Ceiling Mounted Shower Arm and Shower Arm Flange

Kohler - 11-15/16" Ceiling Mounted Shower Arm and Flange