Durst, A4066HT, Chrome Plated, Replacement Swivel Hand Shower Massage Arm Mount Mounting Bracket Holder Adapter, For Hands Free Use Of Hand Held Showers, Installs Easily On Any Standard Shower Arm & Works With Most Hand Shower Systems, Uses Conical Hose Nut Design, 1/2" Female Threads For Attachment To Shower Arm, 1/2" Male Threads To Attach A Shower Hose, For Use With Tapered Nut Hose.