SR SUN RISE Universal Showering Components Shower Arm Polished Chrome Finish SRSH-015 5 years warranty; Standard NPT 1/2 inch connection which suitable for USA; 15.7 inch (40cm) extended screw thread enables a more secure fit; Sturdy Brass Arm body can offer 12 Inch, 10 Inch, 8 Inch Shower Head; Ten layer chrome plated finish offers a sleek look, ensuring corrosion resistance and durable. High quality brass material doesn&#039;t pollute water which will provide a better bathing environment for you and protect your skin.<br> Ten layer chrome platedprevent corrosion. Years still bright clean like new.<br> Sturdy brass construction can hold 8, 10, 12and 16&#034; rain shower head. Stand NPT male 1/2thread.