The Oden option 1 shower set includes an 8" rain shower head (1.8 GPM) with a 12" shower arm and a thermostatic trim and valve with 3/4" ceramic disc volume control. The inlet connections are 1/2". Purchasing this item, you will receive everything that you need in order to install your shower, except the valve, and have it up and running in no time. This set is available in Polished Chrome, Satin Gold, or Brushed Nickel.