[Beautiful and Effective] Features a special process technology with a widened sealing surface at the water outlet to ensure close contact with the sprinkler's sealing gasket. Up to 95% of shower heads achieve a reliable water seal without the need for Teflon tape, helping maintain the clean appearance of your bathroom fixtures. [Durable and Safe] Constructed from marine-grade 304 stainless steel, offering more than double the strength of standard brass. Resistant to acid, alkali, and salt corrosion, providing long-term protection against rust buildup that can cause blockages. Ideal for use in hard water or hot spring water environments. [Bake Paint Finish] Utilizes electrostatic adsorption and micron-level paint deposition for a smooth, durable finish similar to automotive paint, ensuring lasting visual appeal and surface stability. [Installation and Specifications] Includes detailed instructions for easy installation. The unit measures 3 inches in length. Inlet thread: 1/2"-14 NPT. Outlet thread: 1/2"-14 NPT (compatible with 1/2" IPS), designed to fit standard shower arms and shower heads.