Standard Size: G 1/2 female x G 1/2 female adapter is regular US size, suitable for most pipe size with G1/2 inch male thread. Solve the connection problem between two pipes of the same diameter. G 1/2 Female ID: 0.75 inch Sturdy and Anti-rust: Leak Free Heavy duty brass construction with black finish for maximum durability and resistance to corrosion. Suitable for humid environment Reliable Thread: The quality and deep thread of this shower hose adapter makes the accessories better engage with the object to enhance the fixation, and it is not easy to slide, The smoother thread makes the installation easier and faster Easy to Use: This pipe fiitings coupling can be screwed by your hand easily or you can also screw it with a wrench.Extra rubber seal gasket can effectively prevent leakage. Easy to connect and disconnect Widely Application: This extender couplings are used to connect two pipes with G1/2 inch male thread, suitable for DIY showers, bathrooms, RVs, outdoor showers and home plumbing. It is idear for connecting and changing the direction of standard G1/2" shower piping HIGH QUALITY THREAD: The high-quality and deep thread of this shower hose adapter makes the accessories better engage with the object to enhance the fixation, and it is not easy to slide, The smoother thread makes the installation easier and faster.