[Beautiful and Effective] Special process technology with widened water outlet sealing surface ensures close contact with shower head gasket. 95% of shower heads achieve good water sealing without teflon tape, no need to worry about residue affecting bathroom beauty. [Durable and Safe] Made of marine-grade 304 stainless steel, over twice stronger than ordinary brass, excellent resistance to acid, alkali and salt, long-term corrosion resistance to avoid blockage from rust residues, ideal for hard water and hot spring water. [Bake Paint Finish] Uses electrostatic adsorption technology and micron-level paint sedimentation process, making the surface as stable and durable as car paint. [Installation and Specifications] Detailed instructions for easy installation. 3 inches long, inlet thread 1/2"-14 NPT (fits standard shower pipes), outlet thread 1/2"-14 NPT (compatible with 1/2" IPS), suitable for standard interface showers.