TheĀ Oden pressure balance shower set includes An 8" rain shower head (1.8 GPM) with a 12" shower arm, and a pressure balance trim and valve. The inlet connections are 1/2" and the rough is included in this set. 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 or Brushed Nickel.