Gerber Ball End Shower Arm Adapter | Plumbing Repair Accessory and Fitting Part 

Takes a ball end shower arm and converts it to a standard fitting for any regular shower head. Simply screw on the end of the shower arm to convert to standard threads.  Shower arm adapter, for adapting standard 1/2-inch shower heads to ball joint shower arms, fits gerber brand.  Converts the ball end to 1/2 inch male pipe threads. 

Features 

• Converts gerber brand shower arms to standard 1/2 inch male pipe threads
• Rubber washer included 
• An adapter can help you use the shower head you want
• Easy to install