AMERICAN STANDARD THREADS - Shower pipe extension outlet reaches 16”, with 2.7” diameter shower arm flange. 1/2" US standard connector, Fits all standard shower plumbing in the U.S. RELIABLE MATERIAL - Voolan shower arm is made from high-quality 304# stainless steel to ensure it is rust-proof, leak-proof and durable. At the same time, it is able to withstand high pressure, heat, minerals and grit. CAN WITHSTAND HIGH WEIGHT SHOWER HEAD - Solid all-metal construction, 16 inches length for you to enjoy rainfall shower, compatible with 8" 10" 12" square or round shower heads. HIGH PRESSURE - Say goodbye the other low pressure shower arms, our extension pipe arm maintains your shower’s water pressure. the chrome finish shower arm adds sparkle to your bathroom.We know a leaky showerhead can ruin your shower experience, but this shower head extension arm is guaranteed to keep your water flow steady. AFTER-SALES SERVICE - In case of any issue or complaints during use or installation, please don’t hesitate to contact us and we will respond with solutions within 24 hours. It’s always our persistence and belief to provide high-quality products and satisfactory customer services.