The Better Homes & Gardens Easy Hang Decorative Tension Shower Curtain Rod in matte black is at once modern and timeless with a minimalist contemporary design accented by sleek stepped wave finials. Made of rustproof aluminum the shower rod has a no rust lifetime guarantee. With its sturdy 1-inch diameter this rod is made to last. It easily adjusts to fit standard tub and shower spaces from 43 to 72 in. For easy installation the rod has a tool-free tension mechanism that requires only 2 steps: Unlock the rod and extend to desired length; and then twist the rod until tight to lock securely in place.