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 arm. The thread specification of outlet is 1/2"-14 NPT (compatible with 1/2" IPS thread), suitable for sprinkles of standard interface.After-sales Service: In case of any problems or complaints during use or installation, please dont hesitate to contact us and we will respond with solutions within 24 hours. Its always our persistence and belief to provide high-quality products and satisfactory customer services.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.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.Brushed Finish: Unique base material brushed finish technology brings deep and excellent feelings; high rigidity of 304 stainless steel ensures that the brushed finish layer is durable without falling off.