Extend your shower head: Customize your shower experience with this adjustable shower extension arm that extends up to 18 inches Durable material: Made of durable brass construction for years of reliability Installs in minutes: This adjustable shower arm extension installs in minutes, so need for a plumbing professional Complete your shower: Make your shower your own by adding a shower head or hand shower (sold separately) Adjust and tighten the arm positions using the wingnuts on the top and bottom. Recommended to use with Delta shower arms (sold separately) to ensure proper fit