Material:Copper 62%,complaint with North American industrial requirements.Durable solid-brass construction; expertly crafted.All corners are polished,Each side is polished.Make you are not scratched during the shower spa.100% silicone, to high pressure,easy to clean.16 grain allow you to experience a home spa experience.Perfect Design:1/2-inch NPT connections,fits standard American.Size: 2inch(50mm) diameter.Name: side spray or wall spray (body jet)Function: Massagesize:5x5cm Material:coppercolour:BlackPackage Contents:1 x shower headOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.