KONE Solid Brass Shut-off Valve for Shower Head / Bidet Hand Sprayer, shower Head Control Valve G1/2 (Brushed Nickel) Brushed nickel product surface coating to prevent scratches and corrosion 1/2-inch Male IPS by 1/2-inch female IPS connections Installed in the middle of the shower arm and shower head, to control the flow of water It adds about an inch to shower arm length