Constructed of NeverRust aluminum. Fast and simple installation, no tools required. Uses ZHC patented TwistTight technology. Fits 50-72 inch openings. Design creates maximum elbow room. Attractive design fits any decor. Decorative end cap, hidden mechanism for a seamless and finished look after installation. What's Included: Single NeverRust Aluminum Tension Curved Rod, Decorative End CapsSimple, secure tension-based design made of aluminum - guaranteed to never rust.Lightweight, yet strong.Easy to install - No tools required.Curved design provides up to almost a foot of extra room.