Usage Tips:[Beautiful and Effective] It adopts special process technology with widened sealing surface of water outlet to ensure close contact with the sealing gasket of sprinkler. 95% of shower head can achieve good water sealing effect without teflon tape, so theres no need to worry about the beauty of bathroom will be affected by the residue of teflon tapes. [Durable and Safe] The pipe is made of marine-grade 304 stainless steel with over twice strength of ordinary brass, good resistance to acid, alkali and salt, long-term corrosion resistance to avoid shower head blockage due to rust residues, especially suitable for hard water and hot spring water. [Bake Paint Finish] Adopt electrostatic adsorption technology, micron-level paint liquid sedimentation process. Make the surface stable and durable like a car paint. [Installation and Specifications] Detailed instructions ensure worry-free installation. The product is 3 inches long, the thread specification of inlet is 1/2"-14 NPT, suitable for standard shower pipes. The thread specification of outlet is 1/2"-14 NPT (compatible with 1/2" IPS thread), suitable for sprinkles of standard interface.