Hansgrohe 28450001 Croma 160 Showerhead, Chrome 6 1/4-inch Raindance showerhead provides generous coverage, creating a spa-like shower experience 2.5 GPM flow rate provides thorough water flow Easy DIY installation  -inch pipe connection; recommend 9-inch Raindance showerarm (#27422001) Easy-to-clean anti-limescale silicone spray nozzles optimize water flow performance and can be quickly wiped clean AirPower technology mixes water with air to make lighter and softer water droplets that mimic the feel of natural rain