Features: Made from copper, corrosions and rust resistant for durability. This adapter is for ball end shower arms only. Converts ball end to 1/2inch male pipe threads. The shower arm adapter is threaded and fitted with a rubber gasket to ensuring a secure, none leak connection. Easy to install: Simply screw the adapter onto the end of the shower arm to convert to a standard 1/2inch male thread. As this product is suitable for old type ball head shower arms, the old type thread size is used. Specifications: Component: Copper Size: As shown Package Includes: 3Pcs Ball End Shower Arm Adapter note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.