The Keenware KSA-008 Round Overhead 345mm Brass Wall Outlet Shower Arm Has A High Shine Chrome Plated Finish Which Allows It To Look At Home In Any Bathroom. It Has A Standard ½" BSP Inlet Thread & A Standard ½" Shower Head Thread To Ensure Its Compatibility with All Standard UK Shower Heads. Included Is The Chrome Concealing Cap & Locking Nuts For The Reverse of Board. Keenware Sqaure Overhead Brass Shower Head Outlet Arms 345mm Long High Shine Chrome Plating For Contemporary Finish Standard ½" BSP Inlet Thread Standard ½" BSP Shower Head Thread, Compatible With All UK Shower Systems Includes Locking Nuts For Reverse Of Board Chrome Concealing Plate Included