The Grohe Ceiling Mount Arm is crafted with the care and precision of every GROHE product. This universal design accommodates any shower head. This fixture is part of Grohe's decorative collection, so make sure to check out other styles of fixtures to accessorize your room. Solid brass construction Ceiling mount installation 1/2" NPT male thread Grohe starlight maintains luster on brushed and polished finishes Round escutcheon complements bathroom fittings Can be used with any shower head Can be used with any shower head including rainshower jumbo (28 783) Codes/Standards Energy Policy Act of 1992 CSA B125.1 ASME A112.18.1 Key Features & Innovations StarLight Made to last surfaces ranging from precious matt to shiny like a diamond. Configured as:Finish: Matte Black