Shower Faucet - Nickel Brushed Wall Mounted Single Handle with 8 inch Square Brass Shower Head and Valve Shower Trim Flow Rate: 2.0GPM . 8 Inch Blass Rain Shower Head Included This Set have valve for controlling water flow and temp, hot and cold switch, don't have bathtub spout. this product is a single function, can not connect the shower head else. This is a complete set of products, including valves, other brands of valves or accessories are not applicable. 2.0 gallons per minute , NPT United States of America Standard Interface8 inch brass rain shower This shower requires a plumber to install, and the water pipes in the wall need to be laid in advance. This product does not have wall pipe Backed by 5 years limited warranty, wellcome to cantact with us.